Optical imaging lens assembly, image capturing unit and electronic device

ABSTRACT

An optical imaging lens assembly includes six lens elements which are, in order from an object side to an image side: a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element. The second lens element with negative refractive power has an image-side surface being concave in a paraxial region thereof. The fifth lens element has negative refractive power. The sixth lens element has positive refractive power.

RELATED APPLICATIONS

This application is a continuation patent application of U.S.application Ser. No. 15/867,534, filed on Jan. 10, 2018, which claimspriority to Taiwan Application 106133142, filed on Sep. 27, 2017, whichis incorporated by reference herein in its entirety.

BACKGROUND Technical Field

The present disclosure relates to an optical imaging lens assembly, animage capturing unit and an electronic device, more particularly to anoptical imaging lens assembly and an image capturing unit applicable toan electronic device.

Description of Related Art

In recent years, with the popularity of electronic devices having camerafunctionalities, the demand of miniaturized optical systems has beenincreasing. As advanced semiconductor manufacturing technologies havereduced the pixel size of sensors, and compact optical systems havegradually evolved toward the field of higher megapixels, there is anincreasing demand for compact optical systems featuring better imagequality.

For various requirements, the specifications of a camera module arestrictly demanded so that the camera module can be applied to differentkinds of electronic devices, such as advanced driver assistance systems(ADAS), dashboard cameras, lane departure warning systems (LDWS),vehicle backup cameras, blind spot detection systems, multiple lensdevices, intelligent electronic devices, wearable devices, digitalcameras, drones, sport cameras, network surveillance devices,human-computer interaction systems and other electronic imaging devices.

In conventional camera modules, due to the limitation to the shape oflens surfaces and the material selection, it is difficult to reduce thesize thereof as well as satisfy the requirements of a smooth lens shape,easier lens assembling and low sensitivity. Furthermore, the capabilityof functioning normally under different environmental conditions whileproviding high quality images is an important factor for design of thecamera modules. Take the aforementioned automotive devices for example,the camera modules can be disposed on the front side, the lateral sideor other positions of a car in order to detect the objects in thesurrounding environment. The angle of view of the camera modules can bedetermined according to its proposed sensing distance, direction andrange. Moreover, the images captured by camera modules are processed bysoftware to determine the condition of the environment, therebyachieving self-driving or driver assistance. The camera modules can workwith telecommunication devices, radars, automatic high beam systems,blind spot detectors, pedestrian detectors, intelligent brake systems,road sign recognition systems or global positioning system (GPS) so asto improve traffic safety and bring convenience to daily life. To keepthe automotive devices properly functioning in various kinds ofconditions, such as driving in high temperature variation environmentsor encountering impacts while driving on unpaved roads, the cameramodules should be designed to have high heat resistance, high corrosionresistance and high mechanical strength.

Therefore, there is a need to develop an optical system featuring widefield of view, compact size, high image quality and high resistance toenvironmental change.

SUMMARY

According to one aspect of the present disclosure, an optical imaginglens assembly includes six lens elements. The six lens elements are, inorder from an object side to an image side, a first lens element, asecond lens element, a third lens element, a fourth lens element, afifth lens element and a sixth lens element. The second lens elementwith negative refractive power has an image-side surface being concavein a paraxial region thereof. The fifth lens element has negativerefractive power. The sixth lens element has positive refractive power.When a curvature radius of an object-side surface of the fifth lenselement is R9, a curvature radius of an image-side surface of the fifthlens element is R10, a focal length of the optical imaging lens assemblyis f, a focal length of the fifth lens element is f5, a focal length ofthe sixth lens element is f6, an entrance pupil diameter of the opticalimaging lens assembly is EPD, a central thickness of the third lenselement is CT3, a central thickness of the sixth lens element is CT6,the following conditions are satisfied:

0.0<(R9+R10)/(R9−R10);

f/EPD<3.50;

|f5/CT3|<1.85; and

|f6/CT6|<0.70.

According to another aspect of the present disclosure, an imagecapturing unit includes the aforementioned optical imaging lens assemblyand an image sensor, wherein the image sensor is disposed on an imagesurface of the optical imaging lens assembly.

According to still another aspect of the present disclosure, anelectronic device includes the aforementioned image capturing unit.

According to yet another aspect of the present disclosure, an opticalimaging lens assembly includes six lens elements. The six lens elementsare, in order from an object side to an image side, a first lenselement, a second lens element, a third lens element, a fourth lenselement, a fifth lens element and a sixth lens element. The first lenselement has an image-side surface being concave in a paraxial regionthereof. The second lens element has negative refractive power. Thefifth lens element has negative refractive power. The sixth lens elementhas positive refractive power. When a curvature radius of an object-sidesurface of the fifth lens element is R9, a curvature radius of animage-side surface of the fifth lens element is R10, a focal length ofthe optical imaging lens assembly is f, a focal length of the fifth lenselement is f5, an entrance pupil diameter of the optical imaging lensassembly is EPD, a central thickness of the third lens element is CT3,an Abbe number of the fourth lens element is V4, an Abbe number of thefifth lens element is V5, the following conditions are satisfied:

0.60<(R9+R10)/(R9−R10);

f/EPD<3.50;

|f5/CT3|<1.85; and

V4−V5<27.0.

According to yet still another aspect of the present disclosure, anoptical imaging lens assembly includes six lens elements. The six lenselements are, in order from an object side to an image side, a firstlens element, a second lens element, a third lens element, a fourth lenselement, a fifth lens element and a sixth lens element. The second lenselement with negative refractive power has an image-side surface beingconcave in a paraxial region thereof. The fifth lens element hasnegative refractive power. The sixth lens element has positiverefractive power. When a curvature radius of an object-side surface ofthe fifth lens element is R9, a curvature radius of an image-sidesurface of the fifth lens element is R10, a focal length of the opticalimaging lens assembly is f, a focal length of the sixth lens element isf6, an entrance pupil diameter of the optical imaging lens assembly isEPD, a central thickness of the third lens element is CT3, a centralthickness of the sixth lens element is CT6, an axial distance between animage-side surface of the sixth lens element and an image surface is BL,the following conditions are satisfied:

0.0<(R9+R10)/(R9−R10);

f/EPD<2.80;

|f6/CT6|<0.90; and

BL/CT3<1.0.

BRIEF DESCRIPTION OF THE DRAWINGS

The disclosure can be better understood by reading the followingdetailed description of the embodiments, with reference made to theaccompanying drawings as follows:

FIG. 1 is a schematic view of an image capturing unit according to the1st embodiment of the present disclosure;

FIG. 2 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 1stembodiment;

FIG. 3 is a schematic view of an image capturing unit according to the2nd embodiment of the present disclosure;

FIG. 4 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 2ndembodiment;

FIG. 5 is a schematic view of an image capturing unit according to the3rd embodiment of the present disclosure;

FIG. 6 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 3rdembodiment;

FIG. 7 is a schematic view of an image capturing unit according to the4th embodiment of the present disclosure;

FIG. 8 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 4thembodiment;

FIG. 9 is a schematic view of an image capturing unit according to the5th embodiment of the present disclosure;

FIG. 10 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 5thembodiment;

FIG. 11 is a schematic view of an image capturing unit according to the6th embodiment of the present disclosure;

FIG. 12 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 6thembodiment;

FIG. 13 is a schematic view of an image capturing unit according to the7th embodiment of the present disclosure;

FIG. 14 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 7thembodiment;

FIG. 15 is a schematic view of an image capturing unit according to the8th embodiment of the present disclosure;

FIG. 16 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 8thembodiment;

FIG. 17 is a schematic view of an image capturing unit according to the9th embodiment of the present disclosure;

FIG. 18 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 9thembodiment;

FIG. 19 is a schematic view of an image capturing unit according to the10th embodiment of the present disclosure;

FIG. 20 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 10thembodiment;

FIG. 21 is a schematic view of an image capturing unit according to the11th embodiment of the present disclosure;

FIG. 22 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image capturing unit according to the 11thembodiment;

FIG. 23 shows a schematic view of SAG52 and SAG61 according to the 1stembodiment of the present disclosure;

FIG. 24 shows a schematic view of a central thickness of an adhesivelayer between a fifth lens element and a sixth lens element according tothe 1st embodiment of the present disclosure;

FIG. 25 shows an electronic device according to one embodiment;

FIG. 26 shows an electronic device according to another embodiment; and

FIG. 27 shows an electronic device according to still anotherembodiment.

DETAILED DESCRIPTION

An optical imaging lens assembly includes six lens elements. The sixlens elements are, in order from an object side to an image side, afirst lens element, a second lens element, a third lens element, afourth lens element, a fifth lens element and a sixth lens element.

The first lens element can have an image-side surface being concave in aparaxial region thereof. Therefore, it is favorable for providing theoptical imaging lens assembly with a retro-focus configuration forgathering light from large angle of view.

The second lens element has negative refractive power; therefore, it isfavorable for balancing the refractive power distribution between thefirst lens element and the second lens element so as to gather lightfrom large angle of view, and thereby broaden the field of view, suchthat the optical imaging lens assembly is applicable to more kinds ofapplications. The second lens element can have an object-side surfacebeing convex in a paraxial region thereof; therefore, it is favorablefor providing the optical imaging lens assembly with a wide-angle lensconfiguration so as to broaden the field of view. The second lenselement can have an image-side surface being concave in a paraxialregion thereof; therefore, it is favorable for correcting aberrationsgenerated due to an overly large incident angle.

The third lens element can have positive refractive power; therefore, itis favorable for balancing the negative refractive power on the objectside of the optical imaging lens assembly, so that light rays with largeangle of view are properly refracted and propagated in the opticalimaging lens assembly. The third lens element can have an image-sidesurface being convex in a paraxial region thereof; therefore, it isfavorable for moderating the incident light rays with large angle ofview and correcting aberrations on the object side of the opticalimaging lens assembly.

The fourth lens element can have positive refractive power; therefore,it is favorable for balancing the negative refractive power on theobject side of the optical imaging lens assembly, moderating theincident light with large angle of view, reducing sensitivity, andenhancing light convergence capability so as to reduce a total tracklength of the optical imaging lens assembly, thereby meeting therequirement of compactness. The fourth lens element can have anobject-side surface being convex in a paraxial region thereof;therefore, it is favorable for correcting spherical aberration so as toimprove the image quality. The fourth lens element can have animage-side surface being convex in a paraxial region thereof; therefore,it is favorable for keeping sufficient refractive power of the fourthlens element so as to reduce sensitivity.

The fifth lens element has negative refractive power; therefore, it isfavorable for correcting chromatic aberration on the image side of theoptical imaging lens assembly so as to improve the image quality. Thefifth lens element can have an image-side surface being concave in aparaxial region thereof; therefore, it is favorable for correctingchromatic aberration to improve the image quality.

The sixth lens element has positive refractive power; therefore, it isfavorable for the sixth lens element to work with the fifth lens elementto correct off-axis aberrations and alleviate the influence ofenvironmental temperature change on a back focal length of the opticalimaging lens assembly, thereby reducing sensitivity and improving theimage quality. The sixth lens element can have an object-side surfacebeing convex in a paraxial region thereof and an image-side surfacebeing convex in a paraxial region thereof; therefore, it is favorablefor reducing the angle of light rays incident in the image surface inthe off-axis region so as to provide high illuminance and correctoff-axis aberrations.

At least one of the image-side surface of the fifth lens element and theobject-side surface of the sixth lens element can have at least oneinflection point. Therefore, it is favorable for peripheral light raysbeing received by the image surface, thereby preventing stray light,which is generated due to an overly large incident angle, from degradingthe image quality; furthermore, it is favorable for reducing the angleof light rays incident in the image surface in the off-axis region so asto provide high illuminance and further improve the image quality.

When a curvature radius of an object-side surface of the fifth lenselement is R9, and a curvature radius of the image-side surface of thefifth lens element is R10, the following condition is satisfied:0.0<(R9+R10)/(R9−R10). Therefore, adjusting a shape of the fifth lenselement is favorable for correcting off-axis aberrations on the imageside of the optical imaging lens assembly so as to increase imagebrightness and improve the image quality. Preferably, the followingcondition can be satisfied: 0.60<(R9+R10)/(R9−R10). More preferably, thefollowing condition can also be satisfied: 0.65<(R9+R10)/(R9−R10)<2.50.When a focal length of the optical imaging lens assembly is f, and anentrance pupil diameter of the optical imaging lens assembly is EPD, thefollowing condition is satisfied: f/EPD<3.50. Therefore, it is favorablefor gathering sufficient amount of incident light to increaseilluminance on the image surface, so that an imaging capturing unitincluding the optical imaging lens assembly is able to capture enoughimage information in low light condition (for example, in the night) orshort exposure photography (for example, dynamic photography), and thusan electronic device equipped with the imaging capturing unit is able towork under various conditions. Preferably, the following condition canbe satisfied: f/EPD<2.80. More preferably, the following condition canalso be satisfied: 0.50<f/EPD<2.50.

When a focal length of the fifth lens element is f5, and a centralthickness of the third lens element is CT3, the following condition canbe satisfied: |f5/CT3|<1.85. Therefore, it is favorable for moderatinglight rays with large angle of view so that the light rays are properlypropagated in the optical imaging lens assembly; furthermore, it isfavorable for the fifth lens element equipped with sufficient refractivepower so as to correct chromatic aberration and improve the imagequality. Preferably, the following condition can also be satisfied:0.10<|f5/CT3|<1.50.

When a focal length of the sixth lens element is f6, and a centralthickness of the sixth lens element is CT6, the following condition canbe satisfied: |f6/CT6|<0.90. Therefore, it is favorable for the sixthlens element to have sufficient positive refractive power to correctoff-axis aberrations on the image side of the optical imaging lensassembly, and reducing the total track length of the optical imaginglens assembly so as to achieve compactness for various applications.Preferably, the following condition can be satisfied: |f6/CT6|<0.80.More preferably, the following condition can be satisfied:|f6/CT6|<0.70. Much more preferably, the following condition can also besatisfied: 0.10<|f6/CT6|<0.65.

When an Abbe number of the fourth lens element is V4, and an Abbe numberof the fifth lens element is V5, the following condition can besatisfied: V4−V5<29.0. Therefore, selecting proper materials of thefourth lens element and the fifth lens element is favorable for reducingthe sensitivity to the temperature variation among differentenvironments, and correcting chromatic aberration so as to improve theimage quality. Preferably, the following condition can be satisfied:V4−V5<27.0. More preferably, the following condition can also besatisfied: 1.0<V4−V5<25.0.

When an axial distance between the image-side surface of the sixth lenselement and an image surface is BL, and the central thickness of thethird lens element is CT3, the following condition can be satisfied:BL/CT3<1.0. Therefore, keeping a proper ratio of the back focal lengthto the central thickness of the third lens element is favorable forreducing the back focal length and propagating light with large angle ofview in the optical imaging lens assembly, thereby obtaining a balanceamong low sensitivity, compactness and high illuminance.

When the central thickness of the third lens element is CT3, and acentral thickness of the fourth lens element is CT4, the followingcondition can be satisfied: CT4/CT3<1.0. Therefore, maintaining a properratio of the central thickness of the fourth lens element to the centralthickness of the third lens element is favorable for gathering lightfrom large angle of view and increasing the stability of the opticalimaging lens assembly. Preferably, the following condition can also besatisfied: 0.10<CT4/CT3<0.70.

When half of a maximum field of view of the optical imaging lensassembly is HFOV, the following condition can be satisfied:1/|tan(HFOV)|<0.35. Therefore, it is favorable for increasing the fieldof view for more applications.

When a central thickness of the first lens element is CT1, and thecentral thickness of the third lens element is CT3, the followingcondition can be satisfied: 0.10<CT1/CT3<0.65. Therefore, keeping aproper ratio of the central thickness of the first lens element to thecentral thickness of the third lens element is favorable for properlyrefracting light rays with large angle of view so as to reducesensitivity. Preferably, the following condition can also be satisfied:0.20<CT1/CT3<0.65.

When a refractive power of the first lens element is P1, a refractivepower of the second lens element is P2, a refractive power of the thirdlens element is P3, a refractive power of the fourth lens element is P4,a refractive power of the fifth lens element is P5, and a refractivepower of the sixth lens element is P6, the following condition can besatisfied: (|P1|+|P2|+|P3|+|P4|)/(|P5|+|P6|)<0.70. Therefore, properlyarranging the refractive power of the six lens elements to obtain thewide-angle lens configuration is favorable for increasing the imagingrange for various applications. According to the present disclosure, arefractive power of a single lens element is a ratio of the focal lengthof the optical imaging lens assembly to the focal length of the singlelens element.

When the focal length of the fifth lens element is f5, the centralthickness of the third lens element is CT3, and the central thickness ofthe sixth lens element is CT6, the following condition can be satisfied:|f5/CT6|+|f5/CT3|<2.0. Therefore, it is favorable for obtaining goodspace utilization so as to obtain a balance among compactness, lowsensitivity and high manufacturing yield rate. Preferably, the followingcondition can also be satisfied: 0.10<|f5/CT6|+|f5/CT3|<1.45.

When a focal length of the first lens element is f1, a focal length ofthe second lens element is f2, and a focal length of the third lenselement is f3, the following conditions can be satisfied: |f2|<|f1|; and|f2|<|f3|. Therefore, properly arranging the refractive power of thelens elements on the object side of the optical imaging lens assembly isfavorable for obtaining the wide-angle lens configuration so as tobroaden the field of view, such that the optical imaging lens assemblyis applicable to more kinds of applications.

When an Abbe number of the third lens element is V3, the Abbe number ofthe fourth lens element is V4, and the Abbe number of the fifth lenselement is V5, the following condition can be satisfied:30<V3+V4+V5<105. Therefore, the materials of the third, the fourth andthe fifth lens elements are properly selected so as to prevent f-theta(f-θ) distortion due to the optical imaging lens assembly having widefield of view, thereby preventing image distortion and increasing imageresolution.

When a central thickness of the fifth lens element is CT5, and thecentral thickness of the sixth lens element is CT6, the followingcondition can be satisfied: 0.50<CT6/CT5<5.0. Therefore, controlling aratio of the central thickness of the sixth lens element to the centralthickness of the fifth lens element is favorable for balancing the spacearrangement of the optical imaging lens assembly, thereby ensuring highimage quality. Preferably, the following condition can also besatisfied: 1.0<CT6/CT5<3.75.

When a curvature radius of the object-side surface of the sixth lenselement is R11, and a curvature radius of the image-side surface of thesixth lens element is R12, the following condition can be satisfied:|R11/R12|<0.50. Therefore, in cooperation with the fifth lens element, ashape of the sixth lens element is favorable for correcting off-axisaberrations, and preventing stray light generated on the image side ofthe optical imaging lens assembly so as to increase illuminance on theimage surface and improve the image quality. Preferably, the followingcondition can also be satisfied: |R11/R12|<0.45.

According to the present disclosure, the optical imaging lens assemblyfurther includes an aperture stop. When an axial distance between theaperture stop and the object-side surface of the fourth lens element isDsr7, and an axial distance between the aperture stop and the image-sidesurface of the fourth lens element is Dsr8, the following condition canbe satisfied: |Dsr7/Dsr8|<1.0. Therefore, controlling the position ofthe aperture stop is favorable for simultaneously increasingimage-sensing efficiency of the image sensor and maintaining sufficientfield of view.

According to the present disclosure, both the image-side surface of thefifth lens element and the object-side surface of the sixth lens elementcan be aspheric, and the fifth lens element and the sixth lens elementcan be cemented to each other. When a refractive index of the fifth lenselement is N5, and a refractive index of the sixth lens element is N6,the following condition can be satisfied: 3.0<N5+N6<3.30. Therefore,selecting proper materials of the fifth and the sixth lens elements isfavorable for minimizing manufacturing cost and reducing the total tracklength; furthermore, the fifth lens element and the sixth lens elementbeing cemented to each other on their aspheric surfaces is favorable forreducing the impact of temperature variation on the optical imaging lensassembly and correcting off-axis aberrations.

When a displacement in parallel with an optical axis from an axialvertex of the image-side surface of the fifth lens element to a maximumeffective radius position of the image-side surface of the fifth lenselement is SAG52, and a displacement in parallel with the optical axisfrom an axial vertex of the object-side surface of the sixth lenselement to a maximum effective radius position of the object-sidesurface of the sixth lens element is SAG61, the following condition canbe satisfied: SAG52<SAG61. Therefore, adjusting the shapes of theimage-side surface of the fifth lens element and the object-side surfaceof the sixth lens element is favorable for enhancing the shape designflexibility of the lens surfaces and correcting off-axis aberrations.Please refer to FIG. 23, which shows a schematic view of SAG52 and SAG61according to the 1st embodiment of the present disclosure. When thedirection from the axial vertex of one surface to the maximum effectiveradius position of the same surface is facing towards the image side ofthe optical imaging lens assembly, the value of SAG52 or SAG61 ispositive; when the direction from the axial vertex of the surface to themaximum effective radius position of the same surface is facing towardsthe object side of the optical imaging lens assembly, the value of SAG52or SAG61 is negative.

When a curvature radius of an object-side surface of the third lenselement is R5, and a curvature radius of the image-side surface of thethird lens element is R6, the following condition can be satisfied:|R6/R5|<1.50. Therefore, adjusting a shape of the third lens element isfavorable for correcting aberrations generated by large incident angleand reducing sensitivity.

According to the present disclosure, at least three of the six lenselements of the optical imaging lens assembly can be made of plasticmaterial, and all object-side surfaces and image-side surfaces of the atleast three lens elements can be aspheric. Therefore, the materials ofthe lens elements are properly selected so as to reduce manufacturingcost; furthermore, the aspheric surfaces are favorable for meeting therequirement of compactness and improving the image quality.

According to the present disclosure, when the fifth lens element and thesixth lens element are cemented to each other, a central thickness of anadhesive layer between the image-side surface of the fifth lens elementand the object-side surface of the sixth lens element is D, and thefollowing condition can be satisfied: 0.02 [mm]≤D<0.05 [mm]. Therefore,a proper thickness of the adhesive layer is favorable for maintaining agood manufacturing yield rate; furthermore, the fifth lens element andthe sixth lens element being cemented to each other on their asphericsurfaces is favorable for reducing the impact of temperature variationon the optical imaging lens assembly and correcting off-axisaberrations. Please refer to FIG. 24, which shows an adhesive layer ALbetween an image-side surface 152 of a fifth lens element 150 and anobject-side surface 161 of a sixth lens element 160, and the centralthickness D of the adhesive layer AL, according to the 1st embodiment ofthe present disclosure.

According to the present disclosure, an absolute value of the curvatureradius of the image-side surface of the fifth lens element and anabsolute value of the curvature radius of the object-side surface of thesixth lens element are both smaller than the absolute values of thecurvature radii of the other lens surfaces of the six lens elements.That is, both the image-side surface of the fifth lens element and theobject-side surface of the sixth lens element have smaller absolutevalue of curvature radius than the object-side surfaces and theimage-side surfaces of the first through the fourth lens elements, theobject-side surface of the fifth lens element, and the image-sidesurface of the sixth lens element. Therefore, a proper arrangement ofthe curvature radii of the lens surfaces of the six lens elements isfavorable for correcting off-axis aberrations, increasing illuminance onthe image surface and improving the image quality.

When the displacement in parallel with the optical axis from the axialvertex of the image-side surface of the fifth lens element to themaximum effective radius position of the image-side surface of the fifthlens element is SAG52, and the displacement in parallel with the opticalaxis from the axial vertex of the object-side surface of the sixth lenselement to the maximum effective radius position of the object-sidesurface of the sixth lens element is SAG61, the following condition canbe satisfied: 0.03 [mm]<|SAG52−SAG61|×100. Therefore, adjusting theshapes of the image-side surface of the fifth lens element and theobject-side surface of the sixth lens element is favorable for enhancingthe shape design flexibility of the lens surfaces and correctingoff-axis aberrations. Preferably, the following condition can also besatisfied: 0.05 [mm]<|SAG52−SAG61|×100<6.0 [mm].

When a refractive index of the first lens element is N1, and arefractive index of the fourth lens element is N4, the followingcondition can be satisfied: 1.70≤(N1+N4)/2<2.80. Therefore, selectingproper materials of the first lens element and the fourth lens elementis favorable for the optical imaging lens assembly to be applicable todifferent environmental conditions, so the optical imaging lens assemblyis capable of functioning normally under different environmentalconditions, such as environments having different temperature andhumidity, while providing high quality images.

According to the present disclosure, the aforementioned features andconditions can be utilized in numerous combinations so as to achievecorresponding effects.

According to the present disclosure, the lens elements thereof can bemade of glass or plastic material. When the lens elements are made ofglass material, the distribution of the refractive power of the opticalimaging lens assembly may be more flexible to design. When the lenselements are made of plastic material, the manufacturing cost can beeffectively reduced. Furthermore, surfaces of each lens element can bearranged to be aspheric, since the aspheric surface of the lens elementis easy to form a shape other than spherical surface so as to have morecontrollable variables for eliminating the aberration thereof, and tofurther decrease the required number of the lens elements. Therefore,the total track length of the optical imaging lens assembly can also bereduced.

According to the present disclosure, when a lens surface is aspheric, itmeans that the lens surface has an aspheric shape throughout itsoptically effective area, or a portion(s) thereof.

According to the present disclosure, each of an object-side surface andan image-side surface has a paraxial region and an off-axis region. Theparaxial region refers to the region of the surface where light raystravel close to the optical axis, and the off-axis region refers to theregion of the surface away from the paraxial region. Particularly,unless otherwise stated, when the lens element has a convex surface, itindicates that the surface is convex in the paraxial region thereof;when the lens element has a concave surface, it indicates that thesurface is concave in the paraxial region thereof. Moreover, when aregion of refractive power or focus of a lens element is not defined, itindicates that the region of refractive power or focus of the lenselement is in the paraxial region thereof.

According to the present disclosure, an inflection point is a point onthe surface of the lens element at which the surface changes fromconcave to convex, or vice versa.

According to the present disclosure, an image surface of the opticalimaging lens assembly, based on the corresponding image sensor, can beflat or curved, especially a curved surface being concave facing towardsthe object side of the optical imaging lens assembly.

According to the present disclosure, an image correction unit, such as afield flattener, can be optionally disposed between the lens elementclosest to the image side of the optical imaging lens assembly and theimage surface for correction of aberrations such as field curvature. Theoptical properties of the image correction unit, such as curvature,thickness, index of refraction, position and surface shape (convex orconcave surface with spherical, aspheric, diffractive or Fresnel types),can be adjusted according to the demand of an image capturing unit. Ingeneral, a preferable image correction unit is, for example, a thintransparent element having a concave object-side surface and a planarimage-side surface, and the thin transparent element is disposed nearthe image surface.

According to the present disclosure, the optical imaging lens assemblycan include at least one stop, such as an aperture stop, a glare stop ora field stop. Said glare stop or said field stop is set for eliminatingthe stray light and thereby improving the image quality thereof.

According to the present disclosure, an aperture stop can be configuredas a front stop or a middle stop. A front stop disposed between animaged object and the first lens element can provide a longer distancebetween an exit pupil of the optical imaging lens assembly and the imagesurface to produce a telecentric effect, and thereby improves theimage-sensing efficiency of an image sensor (for example, CCD or CMOS).A middle stop disposed between the first lens element and the imagesurface is favorable for enlarging the viewing angle of the opticalimaging lens assembly and thereby provides a wider field of view for thesame.

According to the present disclosure, an image capturing unit includesthe aforementioned optical imaging lens assembly and an image sensor,wherein the image sensor is disposed on the image surface of the opticalimaging lens assembly. In some embodiments, the image capturing unit canfurther include a barrel, a holder member or a combination thereof.

According to the present disclosure, the aforementioned image capturingunit may be installed in, but not limited to, an electronic device.Please refer to FIG. 25, FIG. 26 and FIG. 27, an image capturing unit 10can be applied to electronic devices, such as a vehicle backup camera(FIG. 25), a network surveillance device (FIG. 26) or a dashboard camera(FIG. 27). In some embodiments, the electronic device can furtherinclude, but not limited to, a control unit, a display unit, a storageunit, a random access memory unit (RAM), a read only memory unit (ROM)or a combination thereof.

According to the present disclosure, the optical imaging lens assemblycan be optionally applied to optical systems with a movable focus.Furthermore, the optical imaging lens assembly features good capabilityin aberration corrections and high image quality, and can be applied to3D (three-dimensional) image capturing applications, in products, suchas advanced driver assistance systems (ADAS), lane departure warningsystems (LDWS), blind spot detection systems, multiple lens devices,smart phones, smart televisions, digital cameras, drones, sport cameras,mobile devices, digital tablets, network surveillance devices, motionsensing input devices, wearable devices and other electronic imagingdevices. The aforementioned electronic devices are only exemplary forshowing the image capturing unit of the present disclosure installed inan electronic device and are not limited thereto.

According to the above description of the present disclosure, thefollowing specific embodiments are provided for further explanation.

1st Embodiment

FIG. 1 is a schematic view of an image capturing unit according to the1st embodiment of the present disclosure. FIG. 2 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 1stembodiment. In FIG. 1, the image capturing unit includes the opticalimaging lens assembly (its reference numeral is omitted) of the presentdisclosure and an image sensor 190. The optical imaging lens assemblyincludes, in order from an object side to an image side, a first lenselement 110, a second lens element 120, a third lens element 130, anaperture stop 100, a fourth lens element 140, a fifth lens element 150,a sixth lens element 160, a filter 170, a cover glass 175 and an imagesurface 180. The optical imaging lens assembly includes six lenselements (110, 120, 130, 140, 150 and 160) with no additional lenselement disposed between each of the adjacent six lens elements.

The first lens element 110 with positive refractive power has anobject-side surface 111 being convex in a paraxial region thereof and animage-side surface 112 being concave in a paraxial region thereof. Thefirst lens element 110 is made of plastic material and has theobject-side surface 111 and the image-side surface 112 being bothaspheric.

The second lens element 120 with negative refractive power has anobject-side surface 121 being convex in a paraxial region thereof and animage-side surface 122 being concave in a paraxial region thereof. Thesecond lens element 120 is made of plastic material and has theobject-side surface 121 and the image-side surface 122 being bothaspheric.

The third lens element 130 with positive refractive power has anobject-side surface 131 being concave in a paraxial region thereof andan image-side surface 132 being convex in a paraxial region thereof. Thethird lens element 130 is made of plastic material and has theobject-side surface 131 and the image-side surface 132 being bothaspheric.

The fourth lens element 140 with positive refractive power has anobject-side surface 141 being convex in a paraxial region thereof and animage-side surface 142 being convex in a paraxial region thereof. Thefourth lens element 140 is made of plastic material and has theobject-side surface 141 and the image-side surface 142 being bothaspheric.

The fifth lens element 150 with negative refractive power has anobject-side surface 151 being concave in a paraxial region thereof andan image-side surface 152 being concave in a paraxial region thereof.The fifth lens element 150 is made of plastic material and has theobject-side surface 151 and the image-side surface 152 being bothaspheric. The image-side surface 152 of the fifth lens element 150 hasat least one inflection point.

The sixth lens element 160 with positive refractive power has anobject-side surface 161 being convex in a paraxial region thereof and animage-side surface 162 being convex in a paraxial region thereof. Thesixth lens element 160 is made of plastic material and has theobject-side surface 161 and the image-side surface 162 being bothaspheric. The object-side surface 161 of the sixth lens element 160 hasat least one inflection point. The image-side surface 152 of the fifthlens element 150 and the object-side surface 161 of the sixth lenselement 160 are cemented to each other.

The filter 170 and the cover glass 175 are both made of glass materialand located between the sixth lens element 160 and the image surface180, and will not affect the focal length of the optical imaging lensassembly. The image sensor 190 is disposed on or near the image surface180 of the optical imaging lens assembly.

The equation of the aspheric surface profiles of the aforementioned lenselements of the 1st embodiment is expressed as follows:

${{X(Y)} = {{\left( {Y^{2}\text{/}R} \right)\text{/}\left( {1 + {{sqrt}\; \left( {1 - {\left( {1 + k} \right) \times \left( {Y\text{/}R} \right)^{2}}} \right)}} \right)} + {\sum\limits_{i}{({Ai}) \times \left( Y^{i} \right)}}}},$

where,

X is the relative distance between a point on the aspheric surfacespaced at a distance Y from an optical axis and the tangential plane atthe aspheric surface vertex on the optical axis;

Y is the vertical distance from the point on the aspheric surface to theoptical axis;

R is the curvature radius;

k is the conic coefficient; and

Ai is the i-th aspheric coefficient, and in the embodiments, i may be,but is not limited to, 4, 6, 8, 10 and 12.

In the optical imaging lens assembly of the image capturing unitaccording to the 1st embodiment, when a focal length of the opticalimaging lens assembly is f, an f-number of the optical imaging lensassembly is Fno, and half of a maximum field of view of the opticalimaging lens assembly is HFOV, these parameters have the followingvalues: f=1.29 millimeters (mm), Fno=1.82, HFOV=83.4 degrees (deg.).

When half of the maximum field of view of the optical imaging lensassembly is HFOV, the following condition is satisfied:1/|tan(HFOV)|=0.11.

When an Abbe number of the fourth lens element 140 is V4, and an Abbenumber of the fifth lens element 150 is V5, the following condition issatisfied: V4−V5=6.7.

When an Abbe number of the third lens element 130 is V3, the Abbe numberof the fourth lens element 140 is V4, and the Abbe number of the fifthlens element 150 is V5, the following condition is satisfied:V3+V4+V5=109.6.

When a refractive index of the first lens element 110 is N1, and arefractive index of the fourth lens element 140 is N4, the followingcondition is satisfied: (N1+N4)/2=1.564.

When a refractive index of the fifth lens element 150 is N5, and arefractive index of the sixth lens element 160 is N6, the followingcondition is satisfied: N5+N6=3.182.

When a curvature radius of the object-side surface 151 of the fifth lenselement 150 is R9, and a curvature radius of the image-side surface 152of the fifth lens element 150 is R10, the following condition issatisfied: (R9+R10)/(R9−R10)=0.90.

When a curvature radius of the object-side surface 131 of the third lenselement 130 is R5, and a curvature radius of the image-side surface 132of the third lens element 130 is R6, the following condition issatisfied: |R6/R5|=0.87.

When a curvature radius of the object-side surface 161 of the sixth lenselement 160 is R11, and a curvature radius of the image-side surface 162of the sixth lens element 160 is R12, the following condition issatisfied: |R11/R12|=0.60.

When a central thickness of the first lens element 110 is CT1, and acentral thickness of the third lens element 130 is CT3, the followingcondition is satisfied: CT1/CT3=0.41.

When the central thickness of the third lens element 130 is CT3, and acentral thickness of the fourth lens element 140 is CT4, the followingcondition is satisfied: CT4/CT3=0.39.

When a central thickness of the fifth lens element 150 is CT5, and acentral thickness of the sixth lens element 160 is CT6, the followingcondition is satisfied: CT6/CT5=3.68.

When the focal length of the optical imaging lens assembly is f, and anentrance pupil diameter of the optical imaging lens assembly is EPD, thefollowing condition is satisfied: f/EPD=1.82.

When a focal length of the fifth lens element 150 is f5, and the centralthickness of the third lens element 130 is CT3, the following conditionis satisfied: |f5/CT3|=0.51.

When a focal length of the sixth lens element 160 is f6, and the centralthickness of the sixth lens element 160 is CT6, the following conditionis satisfied: |f6/CT6|=0.62.

When the focal length of the fifth lens element 150 is f5, the centralthickness of the third lens element 130 is CT3, and the centralthickness of the sixth lens element 160 is CT6, the following conditionis satisfied: |f5/CT6|+|f5/CT3|=0.98.

When an axial distance between the image-side surface 162 of the sixthlens element 160 and the image surface 180 is BL, and the centralthickness of the third lens element 130 is CT3, the following conditionis satisfied: BL/CT3=0.65.

When a refractive power of the first lens element 110 is P1, arefractive power of the second lens element 120 is P2, a refractivepower of the third lens element 130 is P3, a refractive power of thefourth lens element 140 is P4, a refractive power of the fifth lenselement 150 is P5, and a refractive power of the sixth lens element 160is P6, the following condition is satisfied:(|P1|+|P2|+|P3|+|P4|)/(|P5|+|P6|)=0.60.

When a displacement in parallel with an optical axis from an axialvertex of the image-side surface 152 of the fifth lens element 150 to amaximum effective radius position of the image-side surface 152 of thefifth lens element 150 is SAG52, the following condition is satisfied:SAG52=0.946 [mm].

When a displacement in parallel with the optical axis from an axialvertex of the object-side surface 161 of the sixth lens element 160 to amaximum effective radius position of the object-side surface 161 of thesixth lens element 160 is SAG61, the following condition is satisfied:SAG61=0.957 [mm].

When the displacement in parallel with the optical axis from the axialvertex of the image-side surface 152 of the fifth lens element 150 tothe maximum effective radius position of the image-side surface 152 ofthe fifth lens element 150 is SAG52, and the displacement in parallelwith the optical axis from the axial vertex of the object-side surface161 of the sixth lens element 160 to the maximum effective radiusposition of the object-side surface 161 of the sixth lens element 160 isSAG61, the following condition is satisfied: |SAG52−SAG61|×100=1.10[mm].

When a central thickness of an adhesive layer between the image-sidesurface 152 of the fifth lens element 150 and the object-side surface161 of the sixth lens element 160 is D, the following condition issatisfied: D=0.03 [mm].

When an axial distance between the aperture stop 100 and the object-sidesurface 141 of the fourth lens element 140 is Dsr7, and an axialdistance between the aperture stop 100 and the image-side surface 142 ofthe fourth lens element 140 is Dsr8, the following condition issatisfied: |Dsr7/Dsr8|=0.11.

The detailed optical data of the 1st embodiment are shown in Table 1 andthe aspheric surface data are shown in Table 2 below.

TABLE 1 1st Embodiment f = 1.29 mm, Fno = 1.82, HFOV = 83.4 deg. FocalSurface # Curvature Radius Thickness Material Index Abbe # Length 0Object Plano Infinity 1 Lens 1 7.281 (ASP) 1.200 Plastic 1.545 56.032.37 2 11.685 (ASP) 2.121 3 Lens 2 10.743 (ASP) 0.896 Plastic 1.54455.9 −2.70 4 1.253 (ASP) 2.860 5 Lens 3 −3.798 (ASP) 2.950 Plastic 1.54455.9 15.09 6 −3.306 (ASP) 2.461 7 Ape. Stop Plano −0.111  8 Lens 4 3.434(ASP) 1.151 Plastic 1.582 30.2 4.24 9 −7.692 (ASP) 0.470 10 Lens 5−19.985 (ASP) 0.869 Plastic 1.639 23.5 −1.50 11 1.026 (ASP) 0.030Cemented 1.485 53.2 12 Lens 6 0.971 (ASP) 3.200 Plastic 1.544 55.9 1.9813 −1.627 (ASP) 0.800 14 Filter Plano 0.300 Glass 1.517 64.2 — 15 Plano0.200 16 Cover glass Plano 0.400 Glass 1.517 64.2 — 17 Plano 0.211 18Image Plano — Note: Reference wavelength is 587.6 nm (d-line).

TABLE 2 Aspheric Coefficients Surface # 1 2 3 4 5 6 k= −5.2594E+004.6992E+00 −5.8660E+00 −8.0155E−01 −4.5102E−01 −2.3069E+00 A4=−1.1110E−04 1.1384E−03 −1.6509E−03 −4.9967E−02 −1.0246E−02 −1.9036E−04A6=  9.7715E−07 8.4697E−05  6.3500E−05  9.8753E−04  1.3929E−03−1.8386E−05 A8=  2.2777E−08 −2.2924E−06  −8.0493E−07  1.6533E−04 6.8661E−05  1.0278E−04 A10= −1.0235E−11 −2.4012E−08   3.5332E−08−3.8604E−05 −1.3111E−05 −1.1419E−05 Surface # 8 9 10 11 12 13 k=9.8722E−01 −8.1848E+01  9.0358E+01 −1.2254E+00 −7.5497E−01 −1.7580E+00A4= 2.1449E−02 2.6597E−02 5.9661E−03 −4.7169E−02 −1.6692E−01  1.2797E−02A6= 4.8617E−03 1.2746E−02 −7.4186E−03   6.8188E−03  3.9628E−02−1.1915E−04 A8= 8.1443E−04 2.2559E−03 4.4964E−03  1.0666E−02  6.2216E−03−1.0408E−03 A10= 7.8285E−05 1.3034E−03 −1.3344E−03  −6.2560E−03−7.6094E−03  1.6162E−04 A12= — — —  8.0706E−04  8.9183E−04 —

In Table 1, the curvature radius, the thickness and the focal length areshown in millimeters (mm). Surface numbers 0-18 represent the surfacessequentially arranged from the object side to the image side along theoptical axis. In Table 2, k represents the conic coefficient of theequation of the aspheric surface profiles. A4-A12 represent the asphericcoefficients ranging from the 4th order to the 12th order. The tablespresented below for each embodiment are the corresponding schematicparameter and aberration curves, and the definitions of the tables arethe same as Table 1 and Table 2 of the 1st embodiment. Therefore, anexplanation in this regard will not be provided again.

2nd Embodiment

FIG. 3 is a schematic view of an image capturing unit according to the2nd embodiment of the present disclosure. FIG. 4 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 2ndembodiment. In FIG. 3, the image capturing unit includes the opticalimaging lens assembly (its reference numeral is omitted) of the presentdisclosure and an image sensor 290. The optical imaging lens assemblyincludes, in order from an object side to an image side, a first lenselement 210, a second lens element 220, a third lens element 230, anaperture stop 200, a fourth lens element 240, a fifth lens element 250,a sixth lens element 260, a filter 270, a cover glass 275 and an imagesurface 280. The optical imaging lens assembly includes six lenselements (210, 220, 230, 240, 250 and 260) with no additional lenselement disposed between each of the adjacent six lens elements.

The first lens element 210 with negative refractive power has anobject-side surface 211 being convex in a paraxial region thereof and animage-side surface 212 being concave in a paraxial region thereof. Thefirst lens element 210 is made of glass material and has the object-sidesurface 211 and the image-side surface 212 being both spherical.

The second lens element 220 with negative refractive power has anobject-side surface 221 being convex in a paraxial region thereof and animage-side surface 222 being concave in a paraxial region thereof. Thesecond lens element 220 is made of plastic material and has theobject-side surface 221 and the image-side surface 222 being bothaspheric.

The third lens element 230 with positive refractive power has anobject-side surface 231 being convex in a paraxial region thereof and animage-side surface 232 being convex in a paraxial region thereof. Thethird lens element 230 is made of plastic material and has theobject-side surface 231 and the image-side surface 232 being bothaspheric.

The fourth lens element 240 with positive refractive power has anobject-side surface 241 being concave in a paraxial region thereof andan image-side surface 242 being convex in a paraxial region thereof. Thefourth lens element 240 is made of plastic material and has theobject-side surface 241 and the image-side surface 242 being bothaspheric.

The fifth lens element 250 with negative refractive power has anobject-side surface 251 being concave in a paraxial region thereof andan image-side surface 252 being concave in a paraxial region thereof.The fifth lens element 250 is made of plastic material and has theobject-side surface 251 and the image-side surface 252 being bothaspheric. The image-side surface 252 of the fifth lens element 250 hasat least one inflection point.

The sixth lens element 260 with positive refractive power has anobject-side surface 261 being convex in a paraxial region thereof and animage-side surface 262 being convex in a paraxial region thereof. Thesixth lens element 260 is made of plastic material and has theobject-side surface 261 and the image-side surface 262 being bothaspheric. The object-side surface 261 of the sixth lens element 260 hasat least one inflection point. The image-side surface 252 of the fifthlens element 250 and the object-side surface 261 of the sixth lenselement 260 are cemented to each other.

The filter 270 and the cover glass 275 are both made of glass materialand located between the sixth lens element 260 and the image surface280, and will not affect the focal length of the optical imaging lensassembly. The image sensor 290 is disposed on or near the image surface280 of the optical imaging lens assembly.

The detailed optical data of the 2nd embodiment are shown in Table 3 andthe aspheric surface data are shown in Table 4 below.

TABLE 3 2nd Embodiment f = 1.23 mm, Fno = 1.80, HFOV = 83.5 deg. FocalSurface # Curvature Radius Thickness Material Index Abbe # Length 0Object Plano Infinity 1 Lens 1 15.753 1.660 Glass 1.569 56.1 −11.27 2 4.383 2.799 3 Lens 2 28.497 (ASP) 1.070 Plastic 1.544 55.9 −2.67 41.361 (ASP) 1.837 5 Lens 3 11.344 (ASP) 3.144 Plastic 1.639 23.5 6.47 6−5.801 (ASP) 0.176 7 Ape. Stop Plano −0.126  8 Lens 4 −14.836 (ASP)1.476 Plastic 1.582 30.2 3.81 9 −2.000 (ASP) 0.311 10 Lens 5 −72.857(ASP) 1.015 Plastic 1.639 23.5 −1.36 11 0.886 (ASP) 0.030 Cemented 1.48553.2 12 Lens 6 0.885 (ASP) 3.250 Plastic 1.544 55.9 1.81 13 −2.528 (ASP)0.800 14 Filter Plano 0.300 Glass 1.517 64.2 — 15 Plano 0.200 16 Coverglass Plano 0.400 Glass 1.517 64.2 — 17 Plano 0.663 18 Image Plano —Note: Reference wavelength is 587.6 nm (d-line).

TABLE 4 Aspheric Coefficients Surface # 3 4 5 6 8 k =  1.4957E+01−2.9502E+00 −9.0000E+01 −9.0000E+01 −2.9235E+01 A4 = −3.8869E−04 8.6586E−02  1.9723E−04  1.5796E−01  2.3978E−01 A6 = −3.4566E−05−2.4275E−02 −2.4922E−03 −7.5142E−02 −1.3310E−01 A8 =  3.3615E−06 6.3212E−03  7.1846E−04  1.0642E−02  4.4597E−02 A10 = −2.5003E−08−7.3426E−04 −3.9509E−04 — −7.0651E−03 Surface # 9 10 11 12 13 k =−3.7583E+00 9.0000E+01 −1.0682E+00 −1.3172E+00 −8.5029E+00 A4 = 2.1456E−02 3.1067E−02 −1.4917E−01 −1.3131E−01 −3.4036E−02 A6 =−1.2005E−02 −1.4102E−02   1.0175E−01  1.2528E−01  1.3048E−02 A8 = 1.3380E−02 5.6563E−03 −3.2856E−02 −4.4072E−02 −3.0881E−03 A10 =−3.4111E−03 −1.8197E−03   3.4142E−03  4.8467E−03  2.9659E−04

In the 2nd embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 2nd embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 3 and Table 4 asthe following values and satisfy the following conditions:

2nd Embodiment f [mm] 1.23 CT6/CT5 3.20 Fno 1.80 f/EPD 1.80 HFOV [deg.]83.5 |f5/CT3| 0.43 1/|tan(HFOV)| 0.11 |f6/CT6| 0.56 V4 − V5 6.7|f5/CT6| + |f5/CT3| 0.85 V3 + V4 + V5 77.2 BL/CT3 0.75 (N1 + N4)/2 1.576(|P1| + |P2| + |P3| + 0.69 |P4|)/(|P5| + |P6|) N5 + N6 3.182 SAG52 [mm]1.238 (R9 + R10)/ 0.98 SAG61 [mm] 1.242 (R9 − R10) |R6/R5| 0.51 |SAG52 −SAG61| × 100 [mm] 0.40 |R11/R12| 0.35 D [mm] 0.03 CT1/CT3 0.53|Dsr7/Dsr8| 0.09 CT4/CT3 0.47 — —

3rd Embodiment

FIG. 5 is a schematic view of an image capturing unit according to the3rd embodiment of the present disclosure. FIG. 6 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 3rdembodiment. In FIG. 5, the image capturing unit includes the opticalimaging lens assembly (its reference numeral is omitted) of the presentdisclosure and an image sensor 390. The optical imaging lens assemblyincludes, in order from an object side to an image side, a first lenselement 310, a second lens element 320, a third lens element 330, anaperture stop 300, a fourth lens element 340, a stop 301, a fifth lenselement 350, a sixth lens element 360, a filter 370, a cover glass 375and an image surface 380. The optical imaging lens assembly includes sixlens elements (310, 320, 330, 340, 350 and 360) with no additional lenselement disposed between each of the adjacent six lens elements.

The first lens element 310 with negative refractive power has anobject-side surface 311 being convex in a paraxial region thereof and animage-side surface 312 being concave in a paraxial region thereof. Thefirst lens element 310 is made of glass material and has the object-sidesurface 311 and the image-side surface 312 being both spherical.

The second lens element 320 with negative refractive power has anobject-side surface 321 being concave in a paraxial region thereof andan image-side surface 322 being concave in a paraxial region thereof.The second lens element 320 is made of plastic material and has theobject-side surface 321 and the image-side surface 322 being bothaspheric.

The third lens element 330 with positive refractive power has anobject-side surface 331 being concave in a paraxial region thereof andan image-side surface 332 being convex in a paraxial region thereof. Thethird lens element 330 is made of plastic material and has theobject-side surface 331 and the image-side surface 332 being bothaspheric.

The fourth lens element 340 with positive refractive power has anobject-side surface 341 being convex in a paraxial region thereof and animage-side surface 342 being convex in a paraxial region thereof. Thefourth lens element 340 is made of glass material and has theobject-side surface 341 and the image-side surface 342 being bothspherical.

The fifth lens element 350 with negative refractive power has anobject-side surface 351 being convex in a paraxial region thereof and animage-side surface 352 being concave in a paraxial region thereof. Thefifth lens element 350 is made of plastic material and has theobject-side surface 351 and the image-side surface 352 being bothaspheric. The image-side surface 352 of the fifth lens element 350 hasat least one inflection point.

The sixth lens element 360 with positive refractive power has anobject-side surface 361 being convex in a paraxial region thereof and animage-side surface 362 being convex in a paraxial region thereof. Thesixth lens element 360 is made of plastic material and has theobject-side surface 361 and the image-side surface 362 being bothaspheric. The object-side surface 361 of the sixth lens element 360 hasat least one inflection point. The image-side surface 352 of the fifthlens element 350 and the object-side surface 361 of the sixth lenselement 360 are cemented to each other.

The filter 370 and the cover glass 375 are both made of glass materialand located between the sixth lens element 360 and the image surface380, and will not affect the focal length of the optical imaging lensassembly. The image sensor 390 is disposed on or near the image surface380 of the optical imaging lens assembly.

The detailed optical data of the 3rd embodiment are shown in Table 5 andthe aspheric surface data are shown in Table 6 below.

TABLE 5 3rd Embodiment f = 0.97 mm, Fno = 2.00, HFOV = 96.5 deg. FocalSurface # Curvature Radius Thickness Material Index Abbe # Length 0Object Plano Infinity 1 Lens 1 10.510  1.000 Glass 1.904 31.4 −5.19 23.097 1.918 3 Lens 2 −19.007 (ASP) 0.884 Plastic 1.544 55.9 −2.82 41.696 (ASP) 1.466 5 Lens 3 −24.088 (ASP) 1.670 Plastic 1.582 30.2 9.30 6−4.533 (ASP) 1.203 7 Ape. Stop Plano 0.025 8 Lens 4 6.295 3.220 Glass1.804 46.6 4.09 9 −5.319  0.041 10 Stop Plano 0.107 11 Lens 5 4.203(ASP) 1.006 Plastic 1.639 23.5 −1.27 12 0.616 (ASP) 0.030 Cemented 1.48553.2 13 Lens 6 0.590 (ASP) 3.166 Plastic 1.544 55.9 1.43 14 −2.182 (ASP)0.200 15 Filter Plano 0.300 Glass 1.517 64.2 — 16 Plano 0.200 17 Coverglass Plano 0.400 Glass 1.517 64.2 — 18 Plano 0.160 19 Image Plano —Note: Reference wavelength is 587.6 nm (d-line). An effective radius ofthe stop 301 (Surface 10) is 1.170 mm.

TABLE 6 Aspheric Coefficients Surface # 3 4 5 6 k = 1.7963E+01−8.0294E−01 −8.5701E+01 5.6899E+00 A4 = 4.2822E−02  1.0692E−01 1.4301E−02 3.3529E−03 A6 = −8.8591E−03   1.5522E−02 −9.2035E−031.6321E−03 A8 = 7.2321E−04 −1.0629E−02  5.0616E−03 −2.5661E−03  A10 =−2.1635E−05  −6.6888E−04 −2.0591E−03 9.2501E−04 Surface # 11 12 13 14 k= −1.0441E+01 −1.2074E+00 −1.0510E+00 −1.5327E+00 A4 = −1.9402E−02−2.1637E−02 −9.9109E−02 −1.5540E−03 A6 =  7.5481E−03 −4.3409E−02−1.0289E−01  1.3690E−02 A8 = −4.4567E−03  4.1620E−02  1.0235E−01−7.1278E−03 A10 =  1.0117E−03 −1.0811E−02 −2.4403E−02  1.2619E−03

In the 3rd embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 3rd embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 5 and Table 6 asthe following values and satisfy the following conditions:

3rd Embodiment f [mm] 0.97 CT6/CT5 3.15 Fno 2.00 f/EPD 2.00 HFOV [deg.]96.5 |f5/CT3| 0.76 1/|tan(HFOV)| 0.11 |f6/CT6| 0.45 V4 − V5 23.1|f5/CT6| + |f5/CT3| 1.16 V3 + V4 + V5 100.3 BL/CT3 0.75 (N1 + N4)/21.854 (|P1| + |P2| + |P3| + 0.60 |P4|)/(|P5| + |P6|) N5 + N6 3.182 SAG52[mm] 1.246 (R9 + R10)/ 1.34 SAG61 [mm] 1.274 (R9 − R10) |R6/R5| 0.19|SAG52 − SAG61| × 100 [mm] 2.79 |R11/R12| 0.27 D [mm] 0.03 CT1/CT3 0.60|Dsr7/Dsr8| 0.01 CT4/CT3 1.93 — —

4th Embodiment

FIG. 7 is a schematic view of an image capturing unit according to the4th embodiment of the present disclosure. FIG. 8 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 4thembodiment. In FIG. 7, the image capturing unit includes the opticalimaging lens assembly (its reference numeral is omitted) of the presentdisclosure and an image sensor 490. The optical imaging lens assemblyincludes, in order from an object side to an image side, a first lenselement 410, a second lens element 420, a third lens element 430, anaperture stop 400, a fourth lens element 440, a fifth lens element 450,a sixth lens element 460, a filter 470, a cover glass 475 and an imagesurface 480. The optical imaging lens assembly includes six lenselements (410, 420, 430, 440, 450 and 460) with no additional lenselement disposed between each of the adjacent six lens elements.

The first lens element 410 with negative refractive power has anobject-side surface 411 being concave in a paraxial region thereof andan image-side surface 412 being concave in a paraxial region thereof.The first lens element 410 is made of glass material and has theobject-side surface 411 and the image-side surface 412 being bothaspheric.

The second lens element 420 with negative refractive power has anobject-side surface 421 being convex in a paraxial region thereof and animage-side surface 422 being concave in a paraxial region thereof. Thesecond lens element 420 is made of plastic material and has theobject-side surface 421 and the image-side surface 422 being bothaspheric.

The third lens element 430 with positive refractive power has anobject-side surface 431 being concave in a paraxial region thereof andan image-side surface 432 being convex in a paraxial region thereof. Thethird lens element 430 is made of plastic material and has theobject-side surface 431 and the image-side surface 432 being bothaspheric.

The fourth lens element 440 with positive refractive power has anobject-side surface 441 being convex in a paraxial region thereof and animage-side surface 442 being convex in a paraxial region thereof. Thefourth lens element 440 is made of plastic material and has theobject-side surface 441 and the image-side surface 442 being bothaspheric.

The fifth lens element 450 with negative refractive power has anobject-side surface 451 being concave in a paraxial region thereof andan image-side surface 452 being concave in a paraxial region thereof.The fifth lens element 450 is made of plastic material and has theobject-side surface 451 and the image-side surface 452 being bothaspheric. The image-side surface 452 of the fifth lens element 450 hasat least one inflection point.

The sixth lens element 460 with positive refractive power has anobject-side surface 461 being convex in a paraxial region thereof and animage-side surface 462 being convex in a paraxial region thereof. Thesixth lens element 460 is made of plastic material and has theobject-side surface 461 and the image-side surface 462 being bothaspheric. The object-side surface 461 of the sixth lens element 460 hasat least one inflection point. The image-side surface 452 of the fifthlens element 450 and the object-side surface 461 of the sixth lenselement 460 are cemented to each other.

The filter 470 and the cover glass 475 are both made of glass materialand located between the sixth lens element 460 and the image surface480, and will not affect the focal length of the optical imaging lensassembly. The image sensor 490 is disposed on or near the image surface480 of the optical imaging lens assembly.

The detailed optical data of the 4th embodiment are shown in Table 7 andthe aspheric surface data are shown in Table 8 below.

TABLE 7 4th Embodiment f = 1.25 mm, Fno = 1.68, HFOV = 84.1 deg. FocalSurface # Curvature Radius Thickness Material Index Abbe # Length 0Object Plano Infinity 1 Lens 1 −111.478 (ASP) 1.216 Glass 1.723 38.0−8.88 2 6.846 (ASP) 1.530 3 Lens 2 16.620 (ASP) 0.959 Plastic 1.544 55.9−4.86 4 2.233 (ASP) 2.976 5 Lens 3 −4.938 (ASP) 2.982 Plastic 1.614 26.012.76 6 −3.725 (ASP) 3.362 7 Ape. Stop Plano −0.268  8 Lens 4 4.124(ASP) 1.182 Plastic 1.584 28.2 4.05 9 −4.970 (ASP) 0.531 10 Lens 5−7.752 (ASP) 0.600 Plastic 1.660 20.4 −1.66 11 1.317 (ASP) 0.030Cemented 1.485 53.2 12 Lens 6 1.201 (ASP) 3.217 Plastic 1.544 55.9 2.1513 −2.537 (ASP) 0.230 14 Filter Plano 0.300 Glass 1.517 64.2 — 15 Plano0.200 16 Cover glass Plano 0.400 Glass 1.517 64.2 — 17 Plano 1.559 18Image Plano — Note: Reference wavelength is 587.6 nm (d-line).

TABLE 8 Aspheric Coefficients Surface # 1 2 3 4 5 6 k= −9.0700E+017.5860E−01 9.6832E+00 −4.1909E−01 −1.5180E−01 −9.7859E−01 A4= 1.3444E+00 −1.9824E−03  −1.7040E−03  −7.7603E−03 −9.0683E−03−6.8345E−04 A6= −5.3056E−01 9.7879E−05 7.9227E−05 −9.4225E−04 3.8183E−04  1.5223E−04 A8=  6.5115E−01 −4.5424E−06  −3.0741E−06  1.4594E−04  1.4986E−05 −1.3319E−05 A10= −3.6875E−01 9.5525E−087.5552E−08 −1.6516E−05 −1.4770E−06  5.8392E−07 Surface # 8 9 10 11 12 13k= 1.5754E+00 −1.9189E+01 2.1307E+01 −8.2221E−01 −6.8545E−01 −1.9269E+00A4= 7.6059E−03  8.1828E−03 1.7022E−02 −1.6223E−02 −1.0528E−01 2.5076E−05 A6= 1.8051E−03 −2.2263E−04 −1.5898E−02  −2.0631E−02 2.5877E−02 −8.5967E−04 A8= −4.4535E−04   9.4773E−04 6.4661E−03 2.0516E−02  9.7614E−03 −4.4927E−05 A10= 1.7686E−04 −2.2369E−04−1.4234E−03  −7.1477E−03 −7.0195E−03  5.4855E−07 A12= — — —  8.0706E−04 8.9183E−04 —

In the 4th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 4th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 7 and Table 8 asthe following values and satisfy the following conditions:

4th Embodiment f [mm] 1.25 CT6/CT5 5.36 Fno 1.68 f/EPD 1.68 HFOV [deg.]84.1 |f5/CT3| 0.56 1/|tan(HFOV)| 0.10 |f6/CT6| 0.67 V4 − V5 7.8|f5/CT6| + |f5/CT3| 1.07 V3 + V4 + V5 74.6 BL/CT3 0.90 (N1 + N4)/2 1.654(|P1| + |P2| + |P3| + 0.60 |P4|)/(|P5| + |P6|) N5 + N6 3.204 SAG52 [mm]1.174 (R9 + R10)/ 0.71 SAG61 [mm] 1.198 (R9 − R10) |R6/R5| 0.75 |SAG52 −SAG61| × 100 [mm] 2.43 |R11/R12| 0.47 D [mm] 0.03 CT1/CT3 0.41|Dsr7/Dsr8| 0.29 CT4/CT3 0.40 — —

5th Embodiment

FIG. 9 is a schematic view of an image capturing unit according to the5th embodiment of the present disclosure. FIG. 10 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 5thembodiment. In FIG. 9, the image capturing unit includes the opticalimaging lens assembly (its reference numeral is omitted) of the presentdisclosure and an image sensor 590. The optical imaging lens assemblyincludes, in order from an object side to an image side, a first lenselement 510, a second lens element 520, a third lens element 530, anaperture stop 500, a fourth lens element 540, a stop 501, a fifth lenselement 550, a sixth lens element 560, a filter 570, a cover glass 575and an image surface 580. The optical imaging lens assembly includes sixlens elements (510, 520, 530, 540, 550 and 560) with no additional lenselement disposed between each of the adjacent six lens elements.

The first lens element 510 with negative refractive power has anobject-side surface 511 being convex in a paraxial region thereof and animage-side surface 512 being concave in a paraxial region thereof. Thefirst lens element 510 is made of glass material and has the object-sidesurface 511 and the image-side surface 512 being both spherical.

The second lens element 520 with negative refractive power has anobject-side surface 521 being convex in a paraxial region thereof and animage-side surface 522 being concave in a paraxial region thereof. Thesecond lens element 520 is made of plastic material and has theobject-side surface 521 and the image-side surface 522 being bothaspheric.

The third lens element 530 with positive refractive power has anobject-side surface 531 being concave in a paraxial region thereof andan image-side surface 532 being convex in a paraxial region thereof. Thethird lens element 530 is made of plastic material and has theobject-side surface 531 and the image-side surface 532 being bothaspheric.

The fourth lens element 540 with positive refractive power has anobject-side surface 541 being convex in a paraxial region thereof and animage-side surface 542 being convex in a paraxial region thereof. Thefourth lens element 540 is made of plastic material and has theobject-side surface 541 and the image-side surface 542 being bothaspheric.

The fifth lens element 550 with negative refractive power has anobject-side surface 551 being convex in a paraxial region thereof and animage-side surface 552 being concave in a paraxial region thereof. Thefifth lens element 550 is made of plastic material and has theobject-side surface 551 and the image-side surface 552 being bothaspheric.

The sixth lens element 560 with positive refractive power has anobject-side surface 561 being convex in a paraxial region thereof and animage-side surface 562 being convex in a paraxial region thereof. Thesixth lens element 560 is made of plastic material and has theobject-side surface 561 and the image-side surface 562 being bothaspheric. The object-side surface 561 of the sixth lens element 560 hasat least one inflection point. The image-side surface 552 of the fifthlens element 550 and the object-side surface 561 of the sixth lenselement 560 are cemented to each other.

The filter 570 and the cover glass 575 are both made of glass materialand located between the sixth lens element 560 and the image surface580, and will not affect the focal length of the optical imaging lensassembly. The image sensor 590 is disposed on or near the image surface580 of the optical imaging lens assembly.

The detailed optical data of the 5th embodiment are shown in Table 9 andthe aspheric surface data are shown in Table 10 below.

TABLE 9 5th Embodiment f = 1.19 mm, Fno = 1.80, HFOV = 74.0 deg. FocalSurface # Curvature Radius Thickness Material Index Abbe # Length 0Object Plano Infinity 1 Lens 1 12.584 1.250 Glass 1.569 56.1 −15.40 2 4.979 2.653 3 Lens 2 22.650 (ASP) 0.756 Plastic 1.544 55.9 −4.14 42.024 (ASP) 2.608 5 Lens 3 −4.201 (ASP) 2.738 Plastic 1.639 23.5 33.61 6−4.406 (ASP) 2.834 7 Ape. Stop Plano −0.156  8 Lens 4 5.500 (ASP) 1.205Plastic 1.582 30.2 5.47 9 −6.960 (ASP) 0.521 10 Stop Plano 0.199 11 Lens5 7.796 (ASP) 1.082 Plastic 1.639 23.5 −1.51 12 0.811 (ASP) 0.030Cemented 1.485 53.2 13 Lens 6 0.719 (ASP) 3.380 Plastic 1.544 55.9 1.6414 −2.446 (ASP) 0.800 15 Filter Plano 0.300 Glass 1.517 64.2 — 16 Plano0.200 17 Cover glass Plano 0.400 Glass 1.517 64.2 — 18 Plano 0.565 19Image Plano — Note: Reference wavelength is 587.6 nm (d-line). Aneffective radius of the stop 501 (Surface 10) is 1.350 mm.

TABLE 10 Aspheric Coefficients Surface # 3 4 5 6 8 k = −9.2975E+00−4.8668E−01 −1.0277E+00 −3.5576E+00 5.6129E+00 A4 =  1.1185E−03−1.4537E−02 −8.1613E−03 −6.9563E−04 1.7466E−02 A6 = −8.3316E−05 3.4209E−04  1.2928E−03  4.9224E−04 −8.2354E−04  A8 =  5.1278E−06−1.3010E−04  1.5167E−05  3.8950E−05 1.5990E−03 A10 = −7.4638E−08 1.4429E−06 −9.2880E−06 −9.1898E−06 −2.0754E−04  Surface # 9 11 12 13 14k = −2.2066E+01   1.7230E+01 −1.1367E+00 −8.7358E−01 −1.5856E+00 A4 =2.3588E−02 −7.6045E−03 −1.7334E−01 −4.6296E−01  1.2594E−02 A6 =1.2991E−03 −1.0148E−03  1.3702E−01  3.4322E−01 −1.8380E−03 A8 =1.6374E−03  5.1728E−04 −5.5361E−02 −1.4988E−01  1.2690E−04 A10 =4.8659E−04 −1.4360E−04  1.0652E−02  3.0871E−02 −5.2033E−06 A12 = — —−7.7598E−04 −2.6199E−03 —

In the 5th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 5th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 9 and Table 10as the following values and satisfy the following conditions:

5th Embodiment f [mm] 1.19 CT6/CT5 3.12 Fno 1.80 f/EPD 1.80 HFOV [deg.]74.0 |f5/CT3| 0.55 1/|tan(HFOV)| 0.29 |f6/CT6| 0.48 V4 − V5 6.7|f5/CT6| + |f5/CT3| 1.00 V3 + V4 + V5 77.2 BL/CT3 0.83 (N1 + N4)/2 1.576(|P1| + |P2| + |P3| + 0.41 |P4|)/(|P5| + |P6|) N5 + N6 3.182 SAG52 [mm]1.302 (R9 + R10)/ 1.23 SAG61 [mm] 1.322 (R9 − R10) |R6/R5| 1.05 |SAG52 −SAG61| × 100 [mm] 2.02 |R11/R12| 0.29 D [mm] 0.03 CT1/CT3 0.46|Dsr7/Dsr8| 0.15 CT4/CT3 0.44 — —

6th Embodiment

FIG. 11 is a schematic view of an image capturing unit according to the6th embodiment of the present disclosure. FIG. 12 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 6thembodiment. In FIG. 11, the image capturing unit includes the opticalimaging lens assembly (its reference numeral is omitted) of the presentdisclosure and an image sensor 690. The optical imaging lens assemblyincludes, in order from an object side to an image side, a first lenselement 610, a second lens element 620, a third lens element 630, anaperture stop 600, a fourth lens element 640, a fifth lens element 650,a sixth lens element 660, a filter 670, a cover glass 675 and an imagesurface 680. The optical imaging lens assembly includes six lenselements (610, 620, 630, 640, 650 and 660) with no additional lenselement disposed between each of the adjacent six lens elements.

The first lens element 610 with negative refractive power has anobject-side surface 611 being convex in a paraxial region thereof and animage-side surface 612 being concave in a paraxial region thereof. Thefirst lens element 610 is made of glass material and has the object-sidesurface 611 and the image-side surface 612 being both spherical.

The second lens element 620 with negative refractive power has anobject-side surface 621 being convex in a paraxial region thereof and animage-side surface 622 being concave in a paraxial region thereof. Thesecond lens element 620 is made of plastic material and has theobject-side surface 621 and the image-side surface 622 being bothaspheric.

The third lens element 630 with positive refractive power has anobject-side surface 631 being convex in a paraxial region thereof and animage-side surface 632 being convex in a paraxial region thereof. Thethird lens element 630 is made of plastic material and has theobject-side surface 631 and the image-side surface 632 being bothaspheric.

The fourth lens element 640 with positive refractive power has anobject-side surface 641 being convex in a paraxial region thereof and animage-side surface 642 being convex in a paraxial region thereof. Thefourth lens element 640 is made of glass material and has theobject-side surface 641 and the image-side surface 642 being bothspherical.

The fifth lens element 650 with negative refractive power has anobject-side surface 651 being convex in a paraxial region thereof and animage-side surface 652 being concave in a paraxial region thereof. Thefifth lens element 650 is made of plastic material and has theobject-side surface 651 and the image-side surface 652 being bothaspheric. The image-side surface 652 of the fifth lens element 650 hasat least one inflection point.

The sixth lens element 660 with positive refractive power has anobject-side surface 661 being convex in a paraxial region thereof and animage-side surface 662 being convex in a paraxial region thereof. Thesixth lens element 660 is made of plastic material and has theobject-side surface 661 and the image-side surface 662 being bothaspheric. The object-side surface 661 of the sixth lens element 660 hasat least one inflection point. The image-side surface 652 of the fifthlens element 650 and the object-side surface 661 of the sixth lenselement 660 are cemented to each other.

The filter 670 and the cover glass 675 are both made of glass materialand located between the sixth lens element 660 and the image surface680, and will not affect the focal length of the optical imaging lensassembly. The image sensor 690 is disposed on or near the image surface680 of the optical imaging lens assembly.

The detailed optical data of the 6th embodiment are shown in Table 11and the aspheric surface data are shown in Table 12 below.

TABLE 11 6th Embodiment f = 0.91 mm, Fno = 2.00, HFOV = 96.4 deg. FocalSurface # Curvature Radius Thickness Material Index Abbe # Length 0Object Plano Infinity 1 Lens 1 11.197 1.100 Glass 1.904 31.4 −5.36 2 3.224 1.924 3 Lens 2 13.176 (ASP) 0.874 Plastic 1.544 55.9 −2.70 41.290 (ASP) 1.496 5 Lens 3 40.467 (ASP) 2.841 Plastic 1.582 30.2 6.14 6−3.820 (ASP) 1.097 7 Ape. Stop Plano −0.004  8 Lens 4  5.117 1.820 Glass1.804 46.6 4.24 9 −8.607 0.207 10 Lens 5 9.306 (ASP) 0.943 Plastic 1.63923.5 −1.05 11 0.603 (ASP) 0.030 Cemented 1.485 53.2 12 Lens 6 0.540(ASP) 3.300 Plastic 1.544 55.9 1.76 13 −1.429 (ASP) 0.200 14 FilterPlano 0.300 Glass 1.517 64.2 — 15 Plano 0.200 16 Cover glass Plano 0.400Glass 1.517 64.2 — 17 Plano 0.271 18 Image Plano — Note: Referencewavelength is 587.6 nm (d-line).

TABLE 12 Aspheric Coefficients Surface # 3 4 5 6 k = −2.1813E+01−1.0074E+00 −5.3279E+01 3.2207E+00 A4 = −3.1241E−03  1.0240E−02−2.8779E−04 5.2359E−04 A6 =  3.4584E−03  2.7907E−02 −3.5875E−03−3.8573E−04  A8 = −8.6789E−04 −4.9716E−04  2.3880E−03 −1.1330E−04  A10 = 8.6420E−05 −1.2650E−03 −1.3719E−03 3.4059E−04 A12 = −3.1689E−06−2.7560E−04 — — Surface # 10 11 12 13 k = −2.6771E+01 −1.4684E+00−1.3603E+00 −4.0687E+00 A4 = −5.2804E−02 −2.0252E−01 −5.0222E−01−3.4544E−02 A6 =  2.4894E−02  2.7568E−01  6.6757E−01  1.3373E−02 A8 =−1.2158E−02 −1.7643E−01 −4.1645E−01 −2.9881E−03 A10 =  2.8156E−03 5.8621E−02  1.3312E−01  2.9995E−04 A12 = — −8.3843E−03 −1.7975E−02 —

In the 6th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 6th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 11 and Table 12as the following values and satisfy the following conditions:

6th Embodiment f [mm] 0.91 CT6/CT5 3.50 Fno 2.00 f/EPD 2.00 HFOV [deg.]96.4 |f5/CT3| 0.37 1/|tan(HFOV)| 0.11 |f6/CT6| 0.53 V4 − V5 23.1|f5/CT6| + |f5/CT3| 0.69 V3 + V4 + V5 100.3 BL/CT3 0.48 (N1 + N4)/21.854 (|P1| + |P2| + |P3| + 0.63 |P4|)/(|P5| + |P6|) N5 + N6 3.182 SAG52[mm] 1.146 (R9 + R10)/ 1.14 SAG61 [mm] 1.158 (R9 − R10) |R6/R5| 0.09|SAG52-SAG61 | × 100 [mm] 1.25 |R11/R12| 0.38 D [mm] 0.03 CT1/CT3 0.39|Dsr7/Dsr8| 0.002 CT4/CT3 0.64 — —

7th Embodiment

FIG. 13 is a schematic view of an image capturing unit according to the7th embodiment of the present disclosure. FIG. 14 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 7thembodiment. In FIG. 13, the image capturing unit includes the opticalimaging lens assembly (its reference numeral is omitted) of the presentdisclosure and an image sensor 790. The optical imaging lens assemblyincludes, in order from an object side to an image side, a first lenselement 710, a second lens element 720, a third lens element 730, anaperture stop 700, a fourth lens element 740, a fifth lens element 750,a sixth lens element 760, a filter 770, a cover glass 775 and an imagesurface 780. The optical imaging lens assembly includes six lenselements (710, 720, 730, 740, 750 and 760) with no additional lenselement disposed between each of the adjacent six lens elements.

The first lens element 710 with positive refractive power has anobject-side surface 711 being convex in a paraxial region thereof and animage-side surface 712 being concave in a paraxial region thereof. Thefirst lens element 710 is made of plastic material and has theobject-side surface 711 and the image-side surface 712 being bothaspheric.

The second lens element 720 with negative refractive power has anobject-side surface 721 being convex in a paraxial region thereof and animage-side surface 722 being concave in a paraxial region thereof. Thesecond lens element 720 is made of plastic material and has theobject-side surface 721 and the image-side surface 722 being bothaspheric.

The third lens element 730 with positive refractive power has anobject-side surface 731 being concave in a paraxial region thereof andan image-side surface 732 being convex in a paraxial region thereof. Thethird lens element 730 is made of plastic material and has theobject-side surface 731 and the image-side surface 732 being bothaspheric.

The fourth lens element 740 with positive refractive power has anobject-side surface 741 being convex in a paraxial region thereof and animage-side surface 742 being concave in a paraxial region thereof. Thefourth lens element 740 is made of plastic material and has theobject-side surface 741 and the image-side surface 742 being bothaspheric.

The fifth lens element 750 with negative refractive power has anobject-side surface 751 being convex in a paraxial region thereof and animage-side surface 752 being concave in a paraxial region thereof. Thefifth lens element 750 is made of plastic material and has theobject-side surface 751 and the image-side surface 752 being bothaspheric. The image-side surface 752 of the fifth lens element 750 hasat least one inflection point.

The sixth lens element 760 with positive refractive power has anobject-side surface 761 being convex in a paraxial region thereof and animage-side surface 762 being convex in a paraxial region thereof. Thesixth lens element 760 is made of plastic material and has theobject-side surface 761 and the image-side surface 762 being bothaspheric. The object-side surface 761 of the sixth lens element 760 hasat least one inflection point. The image-side surface 752 of the fifthlens element 750 and the object-side surface 761 of the sixth lenselement 760 are cemented to each other.

The filter 770 and the cover glass 775 are both made of glass materialand located between the sixth lens element 760 and the image surface780, and will not affect the focal length of the optical imaging lensassembly. The image sensor 790 is disposed on or near the image surface780 of the optical imaging lens assembly.

The detailed optical data of the 7th embodiment are shown in Table 13and the aspheric surface data are shown in Table 14 below.

TABLE 13 7th Embodiment f = 1.29 mm, Fno = 1.89, HFOV = 78.0 deg. FocalSurface # Curvature Radius Thickness Material Index Abbe # Length 0Object Plano Infinity 1 Lens 1 7.267 (ASP) 1.215 Plastic 1.545 56.033.89 2 11.279 (ASP) 2.037 3 Lens 2 4.766 (ASP) 0.873 Plastic 1.544 55.9−2.83 4 1.089 (ASP) 3.017 5 Lens 3 −3.713 (ASP) 2.987 Plastic 1.639 23.517.98 6 −3.685 (ASP) 2.313 7 Ape. Stop Plano −0.113  8 Lens 4 2.990(ASP) 1.152 Plastic 1.566 37.4 5.44 9 90.909 (ASP) 0.502 10 Lens 523.285 (ASP) 0.791 Plastic 1.639 23.5 −1.73 11 1.040 (ASP) 0.030Cemented 1.485 53.2 12 Lens 6 0.971 (ASP) 3.036 Plastic 1.544 55.9 1.9013 −1.699 (ASP) 0.785 14 Filter Plano 0.300 Glass 1.517 64.2 — 15 Plano0.200 16 Cover glass Plano 0.400 Glass 1.517 64.2 — 17 Plano 0.416 18Image Plano — Note: Reference wavelength is 587.6 nm (d-line).

TABLE 14 Aspheric Coefficients Surface # 1 2 3 4 5 6 k= −2.4869E+003.7562E+00 −3.5967E+00 −8.6507E−01 −7.2283E−01 −2.3015E+00 A4=−1.2681E−03 1.1792E−03 −2.9522E−03 −5.6833E−02 −1.2070E−02 −7.7210E−04A6=  6.5799E−05 −9.7334E−05  −1.6846E−04 −2.2984E−03  3.9007E−03 1.1484E−03 A8= −1.4169E−06 1.6736E−05  2.4107E−05  8.3684E−04−5.4273E−04 −2.9312E−04 A10=  1.0527E−08 −5.1530E−07  −6.2757E−07−6.9197E−05  2.9872E−05  2.2095E−05 Surface # 8 9 10 11 12 13 k=9.1341E−01 −9.0000E+01  6.9761E+01 −1.2307E+00 −7.4935E−01 −1.5610E+00A4= 2.0322E−02 5.2160E−02 4.5999E−03 −4.7275E−02 −1.6968E−01  1.7745E−02A6= 9.2040E−03 1.1794E−02 −7.3234E−03   7.0061E−03  3.8475E−02−9.2449E−04 A8= −9.1229E−03  −7.2110E−03  4.6834E−03  1.0756E−02 5.8819E−03 −1.0070E−03 A10= 4.3979E−03 5.6471E−03 −1.3934E−03 −6.2757E−03 −7.4122E−03  1.7129E−04 A12= — — —  8.0706E−04  8.9183E−04 —

In the 7th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 7th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 13 and Table 14as the following values and satisfy the following conditions:

7th Embodiment f [mm] 1.29 CT6/CT5 3.84 Fno 1.89 f/EPD 1.89 HFOV [deg.]78.0 |f5/CT3| 0.58 1/|tan(HFOV)| 0.21 |f6/CT6| 0.62 V4 − V5 13.9|f5/CT6| + |f5/CT3| 1.15 V3 + V4 + V5 84.4 BL/CT3 0.70 (N1 + N4)/2 1.555(|P1| + |P2| + |P3| + 0.56 |P4|)/(|P5| + |P6|) N5 + N6 3.182 SAG52 [mm]0.912 (R9 + R10)/ 1.09 SAG61 [mm] 0.921 (R9 − R10) |R6/R5| 0.99 |SAG52 −SAG61| × 100 [mm] 0.94 |R11/R12| 0.57 D [mm] 0.03 CT1/CT3 0.41|Dsr7/Dsr8| 0.11 CT4/CT3 0.39 — —

8th Embodiment

FIG. 15 is a schematic view of an image capturing unit according to the8th embodiment of the present disclosure. FIG. 16 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 8thembodiment. In FIG. 15, the image capturing unit includes the opticalimaging lens assembly (its reference numeral is omitted) of the presentdisclosure and an image sensor 890. The optical imaging lens assemblyincludes, in order from an object side to an image side, a first lenselement 810, a second lens element 820, a third lens element 830, anaperture stop 800, a fourth lens element 840, a fifth lens element 850,a sixth lens element 860, a filter 870, a cover glass 875 and an imagesurface 880. The optical imaging lens assembly includes six lenselements (810, 820, 830, 840, 850 and 860) with no additional lenselement disposed between each of the adjacent six lens elements.

The first lens element 810 with negative refractive power has anobject-side surface 811 being convex in a paraxial region thereof and animage-side surface 812 being concave in a paraxial region thereof. Thefirst lens element 810 is made of glass material and has the object-sidesurface 811 and the image-side surface 812 being both spherical.

The second lens element 820 with negative refractive power has anobject-side surface 821 being convex in a paraxial region thereof and animage-side surface 822 being concave in a paraxial region thereof. Thesecond lens element 820 is made of plastic material and has theobject-side surface 821 and the image-side surface 822 being bothaspheric.

The third lens element 830 with positive refractive power has anobject-side surface 831 being concave in a paraxial region thereof andan image-side surface 832 being convex in a paraxial region thereof. Thethird lens element 830 is made of plastic material and has theobject-side surface 831 and the image-side surface 832 being bothaspheric.

The fourth lens element 840 with positive refractive power has anobject-side surface 841 being convex in a paraxial region thereof and animage-side surface 842 being convex in a paraxial region thereof. Thefourth lens element 840 is made of plastic material and has theobject-side surface 841 and the image-side surface 842 being bothaspheric.

The fifth lens element 850 with negative refractive power has anobject-side surface 851 being concave in a paraxial region thereof andan image-side surface 852 being concave in a paraxial region thereof.The fifth lens element 850 is made of plastic material and has theobject-side surface 851 and the image-side surface 852 being bothaspheric. The image-side surface 852 of the fifth lens element 850 hasat least one inflection point.

The sixth lens element 860 with positive refractive power has anobject-side surface 861 being convex in a paraxial region thereof and animage-side surface 862 being convex in a paraxial region thereof. Thesixth lens element 860 is made of plastic material and has theobject-side surface 861 and the image-side surface 862 being bothaspheric. The object-side surface 861 of the sixth lens element 860 hasat least one inflection point. The image-side surface 852 of the fifthlens element 850 and the object-side surface 861 of the sixth lenselement 860 are cemented to each other.

The filter 870 and the cover glass 875 are both made of glass materialand located between the sixth lens element 860 and the image surface880, and will not affect the focal length of the optical imaging lensassembly. The image sensor 890 is disposed on or near the image surface880 of the optical imaging lens assembly.

The detailed optical data of the 8th embodiment are shown in Table 15and the aspheric surface data are shown in Table 16 below.

TABLE 15 8th Embodiment f = 1.06 mm, Fno = 2.00, HFOV = 73.9 deg. FocalSurface # Curvature Radius Thickness Material Index Abbe # Length 0Object Plano Infinity 1 Lens 1 12.417 1.200 Glass 1.569 56.1 −15.39 2 4.954 2.682 3 Lens 2 15.436 (ASP) 1.010 Plastic 1.544 55.9 −3.76 41.765 (ASP) 2.729 5 Lens 3 −5.500 (ASP) 2.828 Plastic 1.544 55.9 9.20 6−3.093 (ASP) 2.078 7 Ape. Stop Plano 0.054 8 Lens 4 5.412 (ASP) 0.919Plastic 1.582 30.2 2.78 9 −2.171 (ASP) 0.216 10 Lens 5 −4.859 (ASP)0.887 Plastic 1.639 23.5 −0.88 11 0.685 (ASP) 0.030 Cemented 1.485 53.212 Lens 6 0.671 (ASP) 2.649 Plastic 1.544 55.9 1.43 13 −1.878 (ASP)0.800 14 Filter Plano 0.300 Glass 1.517 64.2 — 15 Plano 0.200 16 Coverglass Plano 0.400 Glass 1.517 64.2 — 17 Plano 0.295 18 Image Plano —Note: Reference wavelength is 587.6 nm (d-line).

TABLE 16 Aspheric Coefficients Surface # 3 4 5 6 8 k = −3.8575E+01 −8.5040E−01 3.1697E+00 −1.8858E+00 5.5677E+00 A4 = 8.0552E−04−5.6565E−03 −2.1875E−03   4.5819E−03 3.3904E−02 A6 = 3.0902E−04−4.0535E−04 1.7230E−03 −5.6624E−04 1.1759E−03 A8 = −2.6390E−05  1.1387E−03 −2.0383E−04   1.2173E−04 9.9099E−04 A10 = 5.7337E−07−1.4385E−04 1.5626E−05 −2.3308E−06 1.6300E−03 Surface # 9 10 11 12 13 k= −9.3052E+00 1.4999E+01 −1.7180E+00 −1.7872E+00 −5.6938E+00 A4 = 2.1011E−02 4.2354E−02 −1.1127E−01 −5.3983E−02 −4.3814E−02 A6 =−2.0797E−02 −5.2205E−02  −1.1590E−02 −1.7043E−01  2.6154E−02 A8 = 4.0168E−02 5.4734E−02  7.9333E−02  2.3969E−01 −7.1783E−03 A10 =−1.9478E−02 −2.0697E−02  −4.0196E−02 −1.0556E−01  7.1856E−04 A12 = — — 5.8122E−03  1.5076E−02 —

In the 8th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 8th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 15 and Table 16as the following values and satisfy the following conditions:

8th Embodiment f [mm] 1.06 CT6/CT5 2.99 Fno 2.00 f/EPD 2.00 HFOV [deg.]73.9 |f5/CT3| 0.31 1/|tan(HFOV)| 0.29 |f6/CT6| 0.54 V4 − V5 6.7|f5/CT6| + |f5/CT3| 0.65 V3 + V4 + V5 109.6 BL/CT3 0.71 (N1 + N4)/21.576 (|P1| + |P2| + |P3| + 0.44 |P4|)/(|P5| + |P6|) N5 + N6 3.182 SAG52[mm] 0.851 (R9 + R10)/ 0.75 SAG61 [mm] 0.856 (R9 − R10) |R6/R5| 0.56|SAG52 − SAG61| × 100 [mm] 0.42 |R11/R12| 0.36 D [mm] 0.03 CT1/CT3 0.42|Dsr7/Dsr8| 0.06 CT4/CT3 0.32 — —

9th Embodiment

FIG. 17 is a schematic view of an image capturing unit according to the9th embodiment of the present disclosure. FIG. 18 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 9thembodiment. In FIG. 17, the image capturing unit includes the opticalimaging lens assembly (its reference numeral is omitted) of the presentdisclosure and an image sensor 990. The optical imaging lens assemblyincludes, in order from an object side to an image side, a first lenselement 910, a second lens element 920, a third lens element 930, anaperture stop 900, a fourth lens element 940, a stop 901, a fifth lenselement 950, a sixth lens element 960, a filter 970, a cover glass 975and an image surface 980. The optical imaging lens assembly includes sixlens elements (910, 920, 930, 940, 950 and 960) with no additional lenselement disposed between each of the adjacent six lens elements.

The first lens element 910 with negative refractive power has anobject-side surface 911 being convex in a paraxial region thereof and animage-side surface 912 being concave in a paraxial region thereof. Thefirst lens element 910 is made of glass material and has the object-sidesurface 911 and the image-side surface 912 being both spherical.

The second lens element 920 with negative refractive power has anobject-side surface 921 being concave in a paraxial region thereof andan image-side surface 922 being concave in a paraxial region thereof.The second lens element 920 is made of plastic material and has theobject-side surface 921 and the image-side surface 922 being bothaspheric.

The third lens element 930 with positive refractive power has anobject-side surface 931 being convex in a paraxial region thereof and animage-side surface 932 being convex in a paraxial region thereof. Thethird lens element 930 is made of plastic material and has theobject-side surface 931 and the image-side surface 932 being bothaspheric.

The fourth lens element 940 with positive refractive power has anobject-side surface 941 being convex in a paraxial region thereof and animage-side surface 942 being convex in a paraxial region thereof. Thefourth lens element 940 is made of glass material and has theobject-side surface 941 and the image-side surface 942 being bothspherical.

The fifth lens element 950 with negative refractive power has anobject-side surface 951 being convex in a paraxial region thereof and animage-side surface 952 being concave in a paraxial region thereof. Thefifth lens element 950 is made of plastic material and has theobject-side surface 951 and the image-side surface 952 being bothaspheric. The image-side surface 952 of the fifth lens element 950 hasat least one inflection point.

The sixth lens element 960 with positive refractive power has anobject-side surface 961 being convex in a paraxial region thereof and animage-side surface 962 being convex in a paraxial region thereof. Thesixth lens element 960 is made of plastic material and has theobject-side surface 961 and the image-side surface 962 being bothaspheric. The object-side surface 961 of the sixth lens element 960 hasat least one inflection point. The image-side surface 952 of the fifthlens element 950 and the object-side surface 961 of the sixth lenselement 960 are cemented to each other.

The filter 970 and the cover glass 975 are both made of glass materialand located between the sixth lens element 960 and the image surface980, and will not affect the focal length of the optical imaging lensassembly. The image sensor 990 is disposed on or near the image surface980 of the optical imaging lens assembly.

The detailed optical data of the 9th embodiment are shown in Table 17and the aspheric surface data are shown in Table 18 below.

TABLE 17 9th embodiment f = 0.90 mm, Fno = 2.00, HFOV = 94.5 deg. FocalSurface # Curvature Radius Thickness Material Index Abbe # Length 0Object Plano Infinity 1 Lens 1 12.466 1.200 Glass 1.904 31.4 −6.05 2 3.627 2.279 3 Lens 2 −6.537 (ASP) 0.977 Plastic 1.544 55.9 −2.34 41.667 (ASP) 1.475 5 Lens 3 10.706 (ASP) 3.000 Plastic 1.639 23.5 4.44 6−3.436 (ASP) 0.678 7 Ape. Stop Plano 0.143 8 Lens 4 50.001 1.230 Glass1.804 46.6 14.50 9 −15.040  0.163 10 Stop Plano −0.008  11 Lens 5 3.178(ASP) 0.888 Plastic 1.639 23.5 −1.66 12 0.708 (ASP) 0.030 Cemented 1.48553.2 13 Lens 6 0.709 (ASP) 3.323 Plastic 1.544 55.9 1.75 14 −1.809 (ASP)0.200 15 Filter Plano 0.300 Glass 1.517 64.2 — 16 Plano 0.200 17 Coverglass Plano 0.400 Glass 1.517 64.2 — 18 Plano 0.526 19 Image Plano —Note: Reference wavelength is 587.6 nm (d-line). An effective radius ofthe stop 901 (Surface 10) is 1.030 mm.

TABLE 18 Aspheric Coefficients Surface # 3 4 5 6 k = −9.8000E+01−2.6569E−01 −1.0854E+01 −5.6358E−01 A4 =  2.1285E−02  5.5898E−02−2.0796E−03 −6.9445E−03 A6 = −3.3882E−03  9.8431E−03 −1.5239E−03−2.8605E−03 A8 =  2.3592E−04 −4.0329E−03  4.4901E−04  1.2738E−03 A10 =−6.1494E−06 −6.2661E−04 −7.1780E−04 −1.9431E−04 Surface # 11 12 13 14 k=  3.8554E+00 −9.4585E−01 −8.0958E−01 −5.6307E+00 A4 = −3.8406E−02 2.4603E−02  6.3801E−02 −4.8471E−02 A6 = −7.7133E−03 −1.6620E−01−3.5228E−01  2.1776E−02 A8 =  2.5489E−03  1.2648E−01  2.5075E−01−6.0653E−03 A10 = −2.2024E−03 −4.4024E−02 −8.2616E−02  6.9982E−04 A12 =—  5.5314E−03  8.3797E−03 —

In the 9th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 9th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 17 and Table 18as the following values and satisfy the following conditions:

9th Embodiment f [mm] 0.90 CT6/CT5 3.74 Fno 2.00 f/EPD 2.00 HFOV [deg.]94.5 |f5/CT3| 0.55 1/|tan(HFOV)| 0.08 |f6/CT6| 0.53 V4 − V5 23.1|f5/CT6| + |f5/CT3| 1.05 V3 + V4 + V5 93.6 BL/CT3 0.54 (N1 + N4)/2 1.854(|P1| + |P2| + |P3| + |P4|)/ 0.75 (|P5| + |P6|) N5 + N6 3.182 SAG52 [mm]1.119 (R9 + R10)/ 1.57 SAG61 [mm] 1.159 (R9 − R10) |R6/R5| 0.32 |SAG52 −SAG61| × 100 [mm] 3.98 |R11/R12| 0.39 D [mm] 0.03 CT1/CT3 0.40|Dsr7/Dsr8| 0.10 CT4/CT3 0.41 — —

10th Embodiment

FIG. 19 is a schematic view of an image capturing unit according to the10th embodiment of the present disclosure. FIG. 20 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 10thembodiment. In FIG. 19, the image capturing unit includes the opticalimaging lens assembly (its reference numeral is omitted) of the presentdisclosure and an image sensor 1090. The optical imaging lens assemblyincludes, in order from an object side to an image side, a first lenselement 1010, a second lens element 1020, a third lens element 1030, afourth lens element 1040, an aperture stop 1000, a fifth lens element1050, a sixth lens element 1060, a filter 1070, a cover glass 1075 andan image surface 1080. The optical imaging lens assembly includes sixlens elements (1010, 1020, 1030, 1040, 1050 and 1060) with no additionallens element disposed between each of the adjacent six lens elements.

The first lens element 1010 with negative refractive power has anobject-side surface 1011 being convex in a paraxial region thereof andan image-side surface 1012 being concave in a paraxial region thereof.The first lens element 1010 is made of glass material and has theobject-side surface 1011 and the image-side surface 1012 being bothspherical.

The second lens element 1020 with negative refractive power has anobject-side surface 1021 being convex in a paraxial region thereof andan image-side surface 1022 being concave in a paraxial region thereof.The second lens element 1020 is made of plastic material and has theobject-side surface 1021 and the image-side surface 1022 being bothaspheric.

The third lens element 1030 with negative refractive power has anobject-side surface 1031 being concave in a paraxial region thereof andan image-side surface 1032 being concave in a paraxial region thereof.The third lens element 1030 is made of plastic material and has theobject-side surface 1031 and the image-side surface 1032 being bothaspheric.

The fourth lens element 1040 with positive refractive power has anobject-side surface 1041 being convex in a paraxial region thereof andan image-side surface 1042 being convex in a paraxial region thereof.The fourth lens element 1040 is made of plastic material and has theobject-side surface 1041 and the image-side surface 1042 being bothaspheric.

The fifth lens element 1050 with negative refractive power has anobject-side surface 1051 being concave in a paraxial region thereof andan image-side surface 1052 being concave in a paraxial region thereof.The fifth lens element 1050 is made of plastic material and has theobject-side surface 1051 and the image-side surface 1052 being bothaspheric. The image-side surface 1052 of the fifth lens element 1050 hasat least one inflection point.

The sixth lens element 1060 with positive refractive power has anobject-side surface 1061 being convex in a paraxial region thereof andan image-side surface 1062 being convex in a paraxial region thereof.The sixth lens element 1060 is made of plastic material and has theobject-side surface 1061 and the image-side surface 1062 being bothaspheric. The object-side surface 1061 of the sixth lens element 1060has at least one inflection point. The image-side surface 1052 of thefifth lens element 1050 and the object-side surface 1061 of the sixthlens element 1060 are cemented to each other.

The filter 1070 and the cover glass 1075 are both made of glass materialand located between the sixth lens element 1060 and the image surface1080, and will not affect the focal length of the optical imaging lensassembly. The image sensor 1090 is disposed on or near the image surface1080 of the optical imaging lens assembly.

The detailed optical data of the 10th embodiment are shown in Table 19and the aspheric surface data are shown in Table 20 below.

TABLE 19 10th embodiment f = 0.92 mm, Fno = 2.00, HFOV = 99.0 deg. FocalSurface # Curvature Radius Thickness Material Index Abbe # Length 0Object Plano Infinity 1 Lens 1 11.107 1.100 Glass 1.804 46.6 −5.81 2 3.142 1.750 3 Lens 2 5.740 (ASP) 0.600 Plastic 1.544 55.9 −2.56 4 1.078(ASP) 1.564 5 Lens 3 −4.179 (ASP) 0.600 Plastic 1.544 55.9 −3.81 6 4.322(ASP) 0.050 7 Lens 4 1.927 (ASP) 1.741 Plastic 1.582 30.2 1.80 8 −1.531(ASP) 0.055 9 Ape. Stop Plano 0.334 10 Lens 5 −1189.873 (ASP) 0.609Plastic 1.639 23.5 −1.09 11 0.697 (ASP) 0.030 Cemented 1.485 53.2 12Lens 6 0.529 (ASP) 2.066 Plastic 1.544 55.9 1.09 13 −1.911 (ASP) 0.40014 Filter Plano 0.300 Glass 1.517 64.2 — 15 Plano 0.100 16 Cover glassPlano 0.400 Glass 1.517 64.2 — 17 Plano 1.107 18 Image Plano — Note:Reference wavelength is 587.6 nm (d-line).

TABLE 20 Aspheric Coefficients Surface # 3 4 5 6 7 k = −8.0218E+00−8.9766E−01 6.2596E+00 1.4578E−01 −9.6117E−01 A4 = −1.1538E−02−4.5356E−02 −6.4563E−02  5.3444E−02  8.9782E−02 A6 =  2.5326E−03 7.9175E−03 2.2908E−02 −1.5318E−01  −1.4039E−01 A8 = −2.0053E−04−2.3931E−03 −1.0361E−02  8.1886E−02  7.4401E−02 A10 =  7.6026E−06 1.5146E−03 4.3407E−03 −1.4346E−02  −1.4115E−02 Surface # 8 10 11 12 13k = −9.6872E+00 −9.9000E+01 −8.4683E−01 −3.3602E+00 −9.5850E+00 A4 =−6.0326E−02  2.3201E−01 −3.1143E−02  4.8153E−01 −1.0422E−01 A6 = 1.0949E−01 −3.3089E−01 −4.8439E−01 −1.2572E+00  7.6218E−02 A8 =−9.5098E−02  2.4580E−01  8.6084E−01  2.1647E+00 −3.4023E−02 A10 = 3.3012E−02 −7.8168E−02 −6.8415E−01 −1.6620E+00  7.6016E−03 A12 = — — 1.8312E−01  4.3960E−01 —

In the 10th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 10th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 19 and Table 20as the following values and satisfy the following conditions:

10th Embodiment f [mm] 0.92 CT6/CT5 3.39 Fno 2.00 f/EPD 2.00 HFOV [deg.]99.0 |f5/CT3| 1.82 1/|tan(HFOV)| 0.16 |f6/CT6| 0.53 V4 − V5 6.7|f5/CT6| + |f5/CT3| 2.35 V3 + V4 + V5 109.6 BL/CT3 3.84 (N1 + N4)/21.693 (|P1| + |P2| + |P3| + 0.75 |P4|)/(|P5| + |P6|) N5 + N6 3.182 SAG52[mm] 0.763 (R9 + R10)/ 1.00 SAG61 [mm] 0.762 (R9 − R10) |R6/R5| 1.03|SAG52 − SAG61| × 100 [mm] 0.07 |R11/R12| 0.28 D [mm] 0.03 CT1/CT3 1.83|Dsr7/Dsr8| 32.65 CT4/CT3 2.90 — —

11th Embodiment

FIG. 21 is a schematic view of an image capturing unit according to the11th embodiment of the present disclosure. FIG. 22 shows, in order fromleft to right, spherical aberration curves, astigmatic field curves anda distortion curve of the image capturing unit according to the 11thembodiment. In FIG. 21, the image capturing unit includes the opticalimaging lens assembly (its reference numeral is omitted) of the presentdisclosure and an image sensor 1190. The optical imaging lens assemblyincludes, in order from an object side to an image side, a first lenselement 1110, a second lens element 1120, a third lens element 1130, anaperture stop 1100, a fourth lens element 1140, a fifth lens element1150, a sixth lens element 1160, a filter 1170, a cover glass 1175 andan image surface 1180. The optical imaging lens assembly includes sixlens elements (1110, 1120, 1130, 1140, 1150 and 1160) with no additionallens element disposed between each of the adjacent six lens elements.

The first lens element 1110 with negative refractive power has anobject-side surface 1111 being convex in a paraxial region thereof andan image-side surface 1112 being concave in a paraxial region thereof.The first lens element 1110 is made of glass material and has theobject-side surface 1111 and the image-side surface 1112 being bothspherical.

The second lens element 1120 with negative refractive power has anobject-side surface 1121 being convex in a paraxial region thereof andan image-side surface 1122 being concave in a paraxial region thereof.The second lens element 1120 is made of plastic material and has theobject-side surface 1121 and the image-side surface 1122 being bothaspheric.

The third lens element 1130 with positive refractive power has anobject-side surface 1131 being concave in a paraxial region thereof andan image-side surface 1132 being convex in a paraxial region thereof.The third lens element 1130 is made of plastic material and has theobject-side surface 1131 and the image-side surface 1132 being bothaspheric.

The fourth lens element 1140 with positive refractive power has anobject-side surface 1141 being convex in a paraxial region thereof andan image-side surface 1142 being convex in a paraxial region thereof.The fourth lens element 1140 is made of plastic material and has theobject-side surface 1141 and the image-side surface 1142 being bothaspheric.

The fifth lens element 1150 with negative refractive power has anobject-side surface 1151 being convex in a paraxial region thereof andan image-side surface 1152 being concave in a paraxial region thereof.The fifth lens element 1150 is made of plastic material and has theobject-side surface 1151 and the image-side surface 1152 being bothaspheric. The image-side surface 1152 of the fifth lens element 1150 hasat least one inflection point.

The sixth lens element 1160 with positive refractive power has anobject-side surface 1161 being convex in a paraxial region thereof andan image-side surface 1162 being convex in a paraxial region thereof.The sixth lens element 1160 is made of plastic material and has theobject-side surface 1161 and the image-side surface 1162 being bothaspheric. The object-side surface 1161 of the sixth lens element 1160has at least one inflection point.

The filter 1170 and the cover glass 1175 are both made of glass materialand located between the sixth lens element 1160 and the image surface1180, and will not affect the focal length of the optical imaging lensassembly. The image sensor 1190 is disposed on or near the image surface1180 of the optical imaging lens assembly.

The detailed optical data of the 11th embodiment are shown in Table 21and the aspheric surface data are shown in Table 22 below.

TABLE 21 11th Embodiment f = 1.11 mm, Fno = 1.78, HFOV = 80.0 deg. FocalSurface # Curvature Radius Thickness Material Index Abbe # Length 0Object Plano Infinity 1 Lens 1 18.066 1.200 Glass 1.786 43.9 −8.85 2 4.874 1.796 3 Lens 2 18.113 (ASP) 0.700 Plastic 1.544 55.9 −7.77 43.379 (ASP) 2.728 5 Lens 3 −20.504 (ASP) 2.984 Plastic 1.669 19.5 13.756 −6.719 (ASP) 3.988 7 Ape. Stop Plano 0.045 8 Lens 4 6.578 (ASP) 1.151Plastic 1.614 26.0 4.87 9 −5.118 (ASP) 0.977 10 Lens 5 17.825 (ASP)1.035 Plastic 1.669 19.5 −3.60 11 2.073 (ASP) 0.600 12 Lens 6 3.214(ASP) 3.500 Plastic 1.544 55.9 2.08 13 −1.076 (ASP) 0.125 14 FilterPlano 0.300 Glass 1.517 64.2 — 15 Plano 0.200 16 Cover glass Plano 0.400Glass 1.517 64.2 — 17 Plano 0.490 18 Image Plano — Note: Referencewavelength is 587.6 nm (d-line).

TABLE 22 Aspheric Coefficients Surface # 3 4 5 6 8 k = 1.4111E+01−3.8329E−01 2.4926E+00 −4.3251E−01 −1.2936E+01 A4 = 4.3232E−03−5.7896E−03 −9.4488E−03  −3.9600E−03  7.4263E−03 A6 = −1.8445E−04  1.2005E−03 4.6293E−04  6.0019E−04  1.3408E−03 A8 = −3.0010E−06 −1.4440E−04 2.5229E−05 −3.5634E−05 −5.8959E−04 A10 = 8.6146E−08 6.5636E−06 −1.0781E−06   1.9000E−06 −1.4467E−03 Surface # 9 10 11 12 13k = 5.1343E+00 −8.1571E+01 −1.0293E+00 −3.1103E−01 −2.4772E+00 A4 =4.3171E−04 −6.9622E−02 −7.9857E−02 −4.2299E−03  6.9274E−03 A6 =−2.2639E−03  −3.9890E−03  1.6152E−02 −1.5869E−05 −1.5053E−03 A8 =8.0785E−03  8.4837E−03 −2.4554E−03 −2.2249E−05  6.0341E−04 A10 =−4.2272E−03  −2.6766E−03  8.5171E−05  1.3724E−05 −5.0372E−05 A12 = — — 1.0094E−05 −1.7171E−06 —

In the 11th embodiment, the equation of the aspheric surface profiles ofthe aforementioned lens elements is the same as the equation of the 1stembodiment. Also, the definitions of these parameters shown in thefollowing table are the same as those stated in the 1st embodiment withcorresponding values for the 11th embodiment, so an explanation in thisregard will not be provided again.

Moreover, these parameters can be calculated from Table 21 and Table 22as the following values and satisfy the following conditions:

11th Embodiment f [mm] 1.11 CT6/CT5 3.38 Fno 1.78 f/EPD 1.78 HFOV [deg.]80.0 |f5/CT3| 1.21 1/|tan(HFOV)| 0.18 |f6/CT6| 0.59 V4 − V5 6.5|f5/CT6| + |f5/CT3| 2.24 V3 + V4 + V5 65.0 BL/CT3 0.51 (N1 + N4)/2 1.700(|P1| + |P2| + |P3| + 0.69 |P4|)/(|P5| + |P6|) N5 + N6 3.213 SAG52 [mm]0.237 (R9 + R10)/ 1.26 SAG61 [mm] 0.934 (R9 − R10) |R6/R5| 0.33 |SAG52 −SAG61| × 100 [mm] 69.61 |R11/R12| 2.99 D [mm] — CT1/CT3 0.40 |Dsr7/Dsr8|0.04 CT4/CT3 0.39 — —

The foregoing description, for the purpose of explanation, has beendescribed with reference to specific embodiments. It is to be noted thatTABLES 1-22 show different data of the different embodiments; however,the data of the different embodiments are obtained from experiments. Theembodiments were chosen and described in order to best explain theprinciples of the disclosure and its practical applications, to therebyenable others skilled in the art to best utilize the disclosure andvarious embodiments with various modifications as are suited to theparticular use contemplated. The embodiments depicted above and theappended drawings are exemplary and are not intended to be exhaustive orto limit the scope of the present disclosure to the precise formsdisclosed. Many modifications and variations are possible in view of theabove teachings.

What is claimed is:
 1. An optical imaging lens assembly comprising six lens elements, the six lens elements being, in order from an object side to an image side: a first lens element; a second lens element having negative refractive power; a third lens element with positive refractive power having an object-side surface being convex in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof; a fourth lens element having positive refractive power; a fifth lens element having negative refractive power; and a sixth lens element having positive refractive power; wherein a curvature radius of the object-side surface of the third lens element is R5, a curvature radius of the image-side surface of the third lens element is R6, a curvature radius of an object-side surface of the fifth lens element is R9, a curvature radius of an image-side surface of the fifth lens element is R10, a curvature radius of an object-side surface of the sixth lens element is R11, a curvature radius of an image-side surface of the sixth lens element is R12, an Abbe number of the third lens element is V3, an Abbe number of the fourth lens element is V4, an Abbe number of the fifth lens element is V5, and the following conditions are satisfied: 0.0<(R9+R10)/(R9−R10); 30<V3+V4+V5<105; |R11/R12|<0.50; and |R6/R5|<1.50.
 2. The optical imaging lens assembly of claim 1, wherein the first lens element has an image-side surface being concave in a paraxial region thereof, the second lens element has an image-side surface being concave in a paraxial region thereof, and the fourth lens element has an object-side surface being convex in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof.
 3. The optical imaging lens assembly of claim 1, wherein the image-side surface of the fifth lens element is concave in a paraxial region thereof, the object-side surface of the sixth lens element is convex in a paraxial region thereof, and the image-side surface of the sixth lens element is convex in a paraxial region thereof.
 4. The optical imaging lens assembly of claim 1, wherein the image-side surface of the fifth lens element and the object-side surface of the sixth lens element are both aspheric, the fifth lens element and the sixth lens element are cemented to each other, a refractive index of the fifth lens element is N5, a refractive index of the sixth lens element is N6, and the following condition is satisfied: 3.0<N5+N6<3.30.
 5. The optical imaging lens assembly of claim 1, wherein at least three of the six lens elements of the optical imaging lens assembly are made of plastic material, and all object-side surfaces and image-side surfaces of the at least three lens elements are aspheric; a focal length of the optical imaging lens assembly is f, an entrance pupil diameter of the optical imaging lens assembly is EPD, and the following condition is satisfied: 0.50<f/EPD<2.50.
 6. The optical imaging lens assembly of claim 1, wherein half of a maximum field of view of the optical imaging lens assembly is HFOV, and the following condition is satisfied: 1/|tan(HFOV)|<0.35.
 7. The optical imaging lens assembly of claim 1, further comprising an aperture stop, wherein an axial distance between the aperture stop and an object-side surface of the fourth lens element is Dsr7, an axial distance between the aperture stop and an image-side surface of the fourth lens element is Dsr8, a central thickness of the fifth lens element is CT5, a central thickness of the sixth lens element is CT6, and the following conditions are satisfied: |Dsr7/Dsr8|<1.0; and 0.50<CT6/CT5<5.0.
 8. The optical imaging lens assembly of claim 1, wherein an absolute value of the curvature radius of the image-side surface of the fifth lens element and an absolute value of the curvature radius of the object-side surface of the sixth lens element are both smaller than absolute values of curvature radii of the other lens surfaces of the six lens elements.
 9. An image capturing unit, comprising: the optical imaging lens assembly of claim 1; and an image sensor disposed on an image surface of the optical imaging lens assembly.
 10. An electronic device, comprising: the image capturing unit of claim
 9. 11. An optical imaging lens assembly comprising six lens elements, the six lens elements being, in order from an object side to an image side: a first lens element; a second lens element having negative refractive power; a third lens element having positive refractive power; a fourth lens element; a fifth lens element having an image-side surface being aspheric; and a sixth lens element having an object-side surface being aspheric; wherein the fifth lens element and the sixth lens element are cemented to each other; a curvature radius of an object-side surface of the fifth lens element is R9, a curvature radius of the image-side surface of the fifth lens element is R10, a curvature radius of the object-side surface of the sixth lens element is R11, a curvature radius of an image-side surface of the sixth lens element is R12, an Abbe number of the third lens element is V3, an Abbe number of the fourth lens element is V4, an Abbe number of the fifth lens element is V5, a central thickness of the fifth lens element is CT5, a central thickness of the sixth lens element is CT6, and the following conditions are satisfied: 0.0<(R9+R10)/(R9−R10); 30<V3+V4+V5<105; |R11/R12|<0.50; and 1.0<CT6/CT5<3.75.
 12. The optical imaging lens assembly of claim 11, wherein the first lens element has an image-side surface being concave in a paraxial region thereof, the fifth lens element has negative refractive power, the image-side surface of the fifth lens element is concave in a paraxial region thereof, and the sixth lens element has positive refractive power.
 13. The optical imaging lens assembly of claim 11, wherein the fourth lens element has an object-side surface being convex in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof, and the sixth lens element has the object-side surface being convex in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof.
 14. The optical imaging lens assembly of claim 11, wherein a focal length of the optical imaging lens assembly is f, an entrance pupil diameter of the optical imaging lens assembly is EPD, a displacement in parallel with an optical axis from an axial vertex of the image-side surface of the fifth lens element to a maximum effective radius position of the image-side surface of the fifth lens element is SAG52, a displacement in parallel with the optical axis from an axial vertex of the object-side surface of the sixth lens element to a maximum effective radius position of the object-side surface of the sixth lens element is SAG61, and the following conditions are satisfied: 0.50<f/EPD<2.50; and SAG52<SAG61.
 15. The optical imaging lens assembly of claim 11, wherein a central thickness of the third lens element is CT3, a central thickness of the fourth lens element is CT4, and the following condition is satisfied: CT4/CT3<1.0.
 16. The optical imaging lens assembly of claim 11, wherein a central thickness of an adhesive layer between the image-side surface of the fifth lens element and the object-side surface of the sixth lens element is D, and the following condition is satisfied: 0.02 [mm]≤D<0.05 [mm].
 17. The optical imaging lens assembly of claim 11, wherein at least one of the image-side surface of the fifth lens element and the object-side surface of the sixth lens element has at least one inflection point, the curvature radius of the object-side surface of the sixth lens element is R11, the curvature radius of the image-side surface of the sixth lens element is R12, and the following condition is satisfied: |R11/R12|<0.45.
 18. The optical imaging lens assembly of claim 11, further comprising an aperture stop disposed between the third lens element and the fourth lens element.
 19. The optical imaging lens assembly of claim 11, wherein an axial distance between the third lens element and the fourth lens element is smaller than an axial distance between the second lens element and the third lens element.
 20. An optical imaging lens assembly comprising six lens elements, the six lens elements being, in order from an object side to an image side: a first lens element having negative refractive power; a second lens element having negative refractive power; a third lens element having positive refractive power; a fourth lens element having positive refractive power; a fifth lens element having negative refractive power; and a sixth lens element having positive refractive power; wherein an axial distance between the third lens element and the fourth lens element is smaller than a central thickness of the third lens element; a curvature radius of an object-side surface of the fifth lens element is R9, a curvature radius of an image-side surface of the fifth lens element is R10, a curvature radius of an object-side surface of the sixth lens element is R11, a curvature radius of an image-side surface of the sixth lens element is R12, a central thickness of the fifth lens element is CT5, a central thickness of the sixth lens element is CT6, half of a maximum field of view of the optical imaging lens assembly is HFOV, a focal length of the second lens element is f2, a focal length of the third lens element is f3, and the following conditions are satisfied: 0.60<(R9+R10)/(R9−R10); |R11/R12|<0.50; 1.0<CT6/CT5<3.75; 1/|tan(HFOV)|<0.35; and |f2|<|f3|.
 21. The optical imaging lens assembly of claim 20, wherein the second lens element has an image-side surface being concave in a paraxial region thereof, at least one of an object-side surface and the image-side surface of the second lens element is aspheric, and the second lens element is made of plastic material.
 22. The optical imaging lens assembly of claim 20, wherein a focal length of the fifth lens element is f5, the central thickness of the third lens element is CT3, and the following condition is satisfied: |f5/CT3|<1.85.
 23. The optical imaging lens assembly of claim 20, wherein half of the maximum field of view of the optical imaging lens assembly is HFOV, and the following condition is satisfied: 1/|tan(HFOV)|≤0.11.
 24. The optical imaging lens assembly of claim 20, wherein a displacement in parallel with an optical axis from an axial vertex of the image-side surface of the fifth lens element to a maximum effective radius position of the image-side surface of the fifth lens element is SAG52, a displacement in parallel with the optical axis from an axial vertex of the object-side surface of the sixth lens element to a maximum effective radius position of the object-side surface of the sixth lens element is SAG61, and the following condition is satisfied: 0.03<|SAG52−SAG61|×100.
 25. The optical imaging lens assembly of claim 20, wherein the image-side surface of the fifth lens element and the object-side surface of the sixth lens element are both aspheric, the fifth lens element and the sixth lens element are cemented to each other, the curvature radius of the object-side surface of the fifth lens element is R9, the curvature radius of the image-side surface of the fifth lens element is R10, and the following condition is satisfied: 0.65<(R9+R10)/(R9−R10)<2.50.
 26. The optical imaging lens assembly of claim 20, wherein at least three of the six lens elements of the optical imaging lens assembly are made of plastic material, and all object-side surfaces and image-side surfaces of the at least three lens elements are aspheric; a focal length of the optical imaging lens assembly is f, an entrance pupil diameter of the optical imaging lens assembly is EPD, and the following condition is satisfied: 0.50<f/EPD≤2.00.
 27. The optical imaging lens assembly of claim 20, wherein an axial distance between the first lens element and the second lens element is a maximum among axial distances between each of all adjacent lens elements of the optical imaging lens assembly. 